diff --git a/your-code/.ipynb_checkpoints/main-checkpoint.ipynb b/your-code/.ipynb_checkpoints/main-checkpoint.ipynb
index 31724c5..ad634e3 100644
--- a/your-code/.ipynb_checkpoints/main-checkpoint.ipynb
+++ b/your-code/.ipynb_checkpoints/main-checkpoint.ipynb
@@ -9,10 +9,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "import pandas\n",
+    "import numpy"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -23,10 +26,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "import pymysql\n",
+    "from sqlalchemy import create_engine\n"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -37,10 +43,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 22,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "conexion = create_engine(\"mysql+pymysql://guest:relational@relational.fit.cvut.cz\")"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -51,10 +59,175 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 28,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>Id</th>\n",
+       "      <th>Reputation</th>\n",
+       "      <th>CreationDate</th>\n",
+       "      <th>DisplayName</th>\n",
+       "      <th>LastAccessDate</th>\n",
+       "      <th>WebsiteUrl</th>\n",
+       "      <th>Location</th>\n",
+       "      <th>AboutMe</th>\n",
+       "      <th>Views</th>\n",
+       "      <th>UpVotes</th>\n",
+       "      <th>DownVotes</th>\n",
+       "      <th>AccountId</th>\n",
+       "      <th>Age</th>\n",
+       "      <th>ProfileImageUrl</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>-1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>2010-07-19 06:55:26</td>\n",
+       "      <td>Community</td>\n",
+       "      <td>2010-07-19 06:55:26</td>\n",
+       "      <td>http://meta.stackexchange.com/</td>\n",
+       "      <td>on the server farm</td>\n",
+       "      <td>&lt;p&gt;Hi, I'm not really a person.&lt;/p&gt;\\n\\n&lt;p&gt;I'm ...</td>\n",
+       "      <td>0</td>\n",
+       "      <td>5007</td>\n",
+       "      <td>1920</td>\n",
+       "      <td>-1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>2</td>\n",
+       "      <td>101</td>\n",
+       "      <td>2010-07-19 14:01:36</td>\n",
+       "      <td>Geoff Dalgas</td>\n",
+       "      <td>2013-11-12 22:07:23</td>\n",
+       "      <td>http://stackoverflow.com</td>\n",
+       "      <td>Corvallis, OR</td>\n",
+       "      <td>&lt;p&gt;Developer on the StackOverflow team.  Find ...</td>\n",
+       "      <td>25</td>\n",
+       "      <td>3</td>\n",
+       "      <td>0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>37.0</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>3</td>\n",
+       "      <td>101</td>\n",
+       "      <td>2010-07-19 15:34:50</td>\n",
+       "      <td>Jarrod Dixon</td>\n",
+       "      <td>2014-08-08 06:42:58</td>\n",
+       "      <td>http://stackoverflow.com</td>\n",
+       "      <td>New York, NY</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://blog.stackoverflow.com/2009...</td>\n",
+       "      <td>22</td>\n",
+       "      <td>19</td>\n",
+       "      <td>0</td>\n",
+       "      <td>3</td>\n",
+       "      <td>35.0</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>4</td>\n",
+       "      <td>101</td>\n",
+       "      <td>2010-07-19 19:03:27</td>\n",
+       "      <td>Emmett</td>\n",
+       "      <td>2014-01-02 09:31:02</td>\n",
+       "      <td>http://minesweeperonline.com</td>\n",
+       "      <td>San Francisco, CA</td>\n",
+       "      <td>&lt;p&gt;currently at a startup in SF&lt;/p&gt;\\n\\n&lt;p&gt;form...</td>\n",
+       "      <td>11</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1998</td>\n",
+       "      <td>28.0</td>\n",
+       "      <td>http://i.stack.imgur.com/d1oHX.jpg</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>5</td>\n",
+       "      <td>6792</td>\n",
+       "      <td>2010-07-19 19:03:57</td>\n",
+       "      <td>Shane</td>\n",
+       "      <td>2014-08-13 00:23:47</td>\n",
+       "      <td>http://www.statalgo.com</td>\n",
+       "      <td>New York, NY</td>\n",
+       "      <td>&lt;p&gt;Quantitative researcher focusing on statist...</td>\n",
+       "      <td>1145</td>\n",
+       "      <td>662</td>\n",
+       "      <td>5</td>\n",
+       "      <td>54503</td>\n",
+       "      <td>35.0</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "   Id  Reputation        CreationDate   DisplayName      LastAccessDate  \\\n",
+       "0  -1           1 2010-07-19 06:55:26     Community 2010-07-19 06:55:26   \n",
+       "1   2         101 2010-07-19 14:01:36  Geoff Dalgas 2013-11-12 22:07:23   \n",
+       "2   3         101 2010-07-19 15:34:50  Jarrod Dixon 2014-08-08 06:42:58   \n",
+       "3   4         101 2010-07-19 19:03:27        Emmett 2014-01-02 09:31:02   \n",
+       "4   5        6792 2010-07-19 19:03:57         Shane 2014-08-13 00:23:47   \n",
+       "\n",
+       "                       WebsiteUrl            Location  \\\n",
+       "0  http://meta.stackexchange.com/  on the server farm   \n",
+       "1        http://stackoverflow.com       Corvallis, OR   \n",
+       "2        http://stackoverflow.com        New York, NY   \n",
+       "3    http://minesweeperonline.com   San Francisco, CA   \n",
+       "4         http://www.statalgo.com        New York, NY   \n",
+       "\n",
+       "                                             AboutMe  Views  UpVotes  \\\n",
+       "0  <p>Hi, I'm not really a person.</p>\\n\\n<p>I'm ...      0     5007   \n",
+       "1  <p>Developer on the StackOverflow team.  Find ...     25        3   \n",
+       "2  <p><a href=\"http://blog.stackoverflow.com/2009...     22       19   \n",
+       "3  <p>currently at a startup in SF</p>\\n\\n<p>form...     11        0   \n",
+       "4  <p>Quantitative researcher focusing on statist...   1145      662   \n",
+       "\n",
+       "   DownVotes  AccountId   Age                     ProfileImageUrl  \n",
+       "0       1920         -1   NaN                                None  \n",
+       "1          0          2  37.0                                None  \n",
+       "2          0          3  35.0                                None  \n",
+       "3          0       1998  28.0  http://i.stack.imgur.com/d1oHX.jpg  \n",
+       "4          5      54503  35.0                                None  "
+      ]
+     },
+     "execution_count": 28,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "UsersTable = pandas.read_sql_query('SELECT * FROM stats.users;', conexion)\n",
+    "UsersTable.head()\n"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -65,10 +238,399 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 35,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "       userId  Reputation        CreationDate          DisplayName  \\\n",
+      "0          -1           1 2010-07-19 06:55:26            Community   \n",
+      "1           2         101 2010-07-19 14:01:36         Geoff Dalgas   \n",
+      "2           3         101 2010-07-19 15:34:50         Jarrod Dixon   \n",
+      "3           4         101 2010-07-19 19:03:27               Emmett   \n",
+      "4           5        6792 2010-07-19 19:03:57                Shane   \n",
+      "5           6         457 2010-07-19 19:04:07               Harlan   \n",
+      "6           7         429 2010-07-19 19:04:37                Vince   \n",
+      "7           8        6764 2010-07-19 19:04:52          csgillespie   \n",
+      "8          10         121 2010-07-19 19:05:40               Pierre   \n",
+      "9          11         136 2010-07-19 19:06:02             wahalulu   \n",
+      "10         12         101 2010-07-19 19:06:34                  Jin   \n",
+      "11         13         817 2010-07-19 19:06:49              Sharpie   \n",
+      "12         15          11 2010-07-19 19:07:32        hannes.koller   \n",
+      "13         16         101 2010-07-19 19:08:13            slashnick   \n",
+      "14         17         345 2010-07-19 19:08:28               Random   \n",
+      "15         18         128 2010-07-19 19:08:29               grokus   \n",
+      "16         19         101 2010-07-19 19:08:45          Noah Snyder   \n",
+      "17         21         101 2010-07-19 19:08:56   Waleed Al-Balooshi   \n",
+      "18         22         591 2010-07-19 19:09:00                radek   \n",
+      "19         23         308 2010-07-19 19:09:16          Jay Stevens   \n",
+      "20         24         344 2010-07-19 19:09:32               A Lion   \n",
+      "21         25        4968 2010-07-19 19:09:32      Harvey Motulsky   \n",
+      "22         26        3150 2010-07-19 19:09:39                  JMS   \n",
+      "23         27         101 2010-07-19 19:09:41               balpha   \n",
+      "24         29        2250 2010-07-19 19:09:42              JD Long   \n",
+      "25         30        2185 2010-07-19 19:10:15                gappy   \n",
+      "26         33         221 2010-07-19 19:11:08           James Roth   \n",
+      "27         34         185 2010-07-19 19:11:11  Christopher D. Long   \n",
+      "28         35         101 2010-07-19 19:11:38                adi92   \n",
+      "29         36        1570 2010-07-19 19:11:52       Stephen Turner   \n",
+      "...       ...         ...                 ...                  ...   \n",
+      "40295   55718           6 2014-09-13 07:12:49                Amena   \n",
+      "40296   55719           1 2014-09-13 07:19:09   OGUNNUSI OLUWATOBI   \n",
+      "40297   55720           1 2014-09-13 08:00:08              Rebecca   \n",
+      "40298   55721         101 2014-09-13 08:15:38           Lotte Laat   \n",
+      "40299   55722           1 2014-09-13 08:32:22            WojciechF   \n",
+      "40300   55723           1 2014-09-13 09:29:38  Davidson Salvia Jr.   \n",
+      "40301   55724          16 2014-09-13 09:50:11            ouroboros   \n",
+      "40302   55725           1 2014-09-13 09:53:01         Jatin Baveja   \n",
+      "40303   55726           1 2014-09-13 09:54:27     SuPakarn Junfang   \n",
+      "40304   55727           1 2014-09-13 10:03:06         biggvsdiccvs   \n",
+      "40305   55728           1 2014-09-13 10:48:35            user56299   \n",
+      "40306   55729          16 2014-09-13 11:04:54        Achim Zeileis   \n",
+      "40307   55730           1 2014-09-13 12:01:38           quants_mum   \n",
+      "40308   55731           1 2014-09-13 15:23:34             Kiran BM   \n",
+      "40309   55732         101 2014-09-13 15:31:37     Szilárd Pfeiffer   \n",
+      "40310   55733           6 2014-09-13 15:51:18                  Pax   \n",
+      "40311   55734           1 2014-09-13 15:56:55                jalen   \n",
+      "40312   55735           1 2014-09-13 16:21:29               Mukund   \n",
+      "40313   55736           1 2014-09-13 16:29:11                liszt   \n",
+      "40314   55737           1 2014-09-13 17:53:27             oolusola   \n",
+      "40315   55738          11 2014-09-13 18:06:50                guest   \n",
+      "40316   55739           1 2014-09-13 19:06:17              kpivert   \n",
+      "40317   55740           1 2014-09-13 19:12:19            Nikkolasg   \n",
+      "40318   55741         101 2014-09-13 20:19:48             Jutschge   \n",
+      "40319   55742           6 2014-09-13 20:36:55          Sayan Ghosh   \n",
+      "40320   55743           1 2014-09-13 21:03:50            AussieMeg   \n",
+      "40321   55744           6 2014-09-13 21:39:30            Mia Maria   \n",
+      "40322   55745         101 2014-09-13 23:45:27         tronbabylove   \n",
+      "40323   55746         106 2014-09-14 00:29:41                  GPP   \n",
+      "40324   55747           1 2014-09-14 01:01:44       Shivam Agrawal   \n",
+      "\n",
+      "           LastAccessDate                                    WebsiteUrl  \\\n",
+      "0     2010-07-19 06:55:26                http://meta.stackexchange.com/   \n",
+      "1     2013-11-12 22:07:23                      http://stackoverflow.com   \n",
+      "2     2014-08-08 06:42:58                      http://stackoverflow.com   \n",
+      "3     2014-01-02 09:31:02                  http://minesweeperonline.com   \n",
+      "4     2014-08-13 00:23:47                       http://www.statalgo.com   \n",
+      "5     2014-08-07 19:49:44                 http://www.harlan.harris.name   \n",
+      "6     2014-09-10 21:14:12             http://bioinformatics.ucdavis.edu   \n",
+      "7     2014-09-09 21:15:08              http://www.mas.ncl.ac.uk/~ncsg3/   \n",
+      "8     2014-07-28 18:15:02               http://plindenbaum.blogspot.com   \n",
+      "9     2014-07-23 21:28:18       http://www.linkedin.com/in/marckvaisman   \n",
+      "10    2014-09-09 20:26:03                           http://www.8164.org   \n",
+      "11    2014-08-14 17:28:14                     http://www.sharpsteen.net   \n",
+      "12    2010-08-24 14:23:18                         http://soma.denkt.org   \n",
+      "13    2010-08-19 20:40:59                                          None   \n",
+      "14    2010-09-10 07:34:36                                          None   \n",
+      "15    2012-08-09 15:02:00                          http://wikipedia.org   \n",
+      "16    2012-06-17 15:53:43                http://sbseminar.wordpress.com   \n",
+      "17    2011-09-26 02:28:45                                          None   \n",
+      "18    2014-09-11 15:21:01                                          None   \n",
+      "19    2014-08-11 19:51:32               http://www.centerlinescores.com   \n",
+      "20    2011-12-06 04:21:56                                          None   \n",
+      "21    2014-09-13 21:51:42                       http://www.graphpad.com   \n",
+      "22    2014-09-13 04:03:25                                          None   \n",
+      "23    2014-04-14 14:57:17                             http://balpha.de/   \n",
+      "24    2014-08-11 19:14:03                http://cerebralmastication.com   \n",
+      "25    2014-08-27 20:06:28              http://www.twitter.com/gappy3000   \n",
+      "26    2014-09-08 21:15:20                                          None   \n",
+      "27    2014-09-13 00:02:35         http://angrystatistician.blogspot.com   \n",
+      "28    2014-08-13 06:05:38  http://www.contrib.andrew.cmu.edu/~amukherj/   \n",
+      "29    2014-08-29 15:17:07      http://gettinggeneticsdone.blogspot.com/   \n",
+      "...                   ...                                           ...   \n",
+      "40295 2014-09-13 07:12:49                                          None   \n",
+      "40296 2014-09-13 08:03:19                                          None   \n",
+      "40297 2014-09-13 08:00:08                                          None   \n",
+      "40298 2014-09-13 08:15:38                                          None   \n",
+      "40299 2014-09-13 08:32:22             http://about.me/wojciechfrancuzik   \n",
+      "40300 2014-09-13 09:29:38                                          None   \n",
+      "40301 2014-09-13 10:05:17                                          None   \n",
+      "40302 2014-09-13 15:25:42                                          None   \n",
+      "40303 2014-09-13 13:10:43                                          None   \n",
+      "40304 2014-09-13 10:03:06                                          None   \n",
+      "40305 2014-09-13 10:48:35                                          None   \n",
+      "40306 2014-09-13 12:15:21                                          None   \n",
+      "40307 2014-09-13 12:01:38                                          None   \n",
+      "40308 2014-09-13 20:51:55                                          None   \n",
+      "40309 2014-09-13 15:31:37                 http://www.pfeifferszilard.hu   \n",
+      "40310 2014-09-13 23:57:22                                          None   \n",
+      "40311 2014-09-13 15:56:55                                          None   \n",
+      "40312 2014-09-13 16:21:29                                          None   \n",
+      "40313 2014-09-13 16:29:11                                          None   \n",
+      "40314 2014-09-13 17:53:27                                          None   \n",
+      "40315 2014-09-14 01:34:01                                          None   \n",
+      "40316 2014-09-13 19:06:17                                          None   \n",
+      "40317 2014-09-13 19:46:29                                          None   \n",
+      "40318 2014-09-13 20:19:48                                          None   \n",
+      "40319 2014-09-13 22:04:00                                          None   \n",
+      "40320 2014-09-13 21:18:52                                          None   \n",
+      "40321 2014-09-13 21:39:30                                          None   \n",
+      "40322 2014-09-13 23:45:27                                          None   \n",
+      "40323 2014-09-14 02:05:17                                          None   \n",
+      "40324 2014-09-14 01:19:04                                          None   \n",
+      "\n",
+      "                        Location  \\\n",
+      "0             on the server farm   \n",
+      "1                  Corvallis, OR   \n",
+      "2                   New York, NY   \n",
+      "3              San Francisco, CA   \n",
+      "4                   New York, NY   \n",
+      "5           District of Columbia   \n",
+      "6                      Davis, CA   \n",
+      "7      Newcastle, United Kingdom   \n",
+      "8                         France   \n",
+      "9                 Washington, DC   \n",
+      "10                   Raleigh, NC   \n",
+      "11                 United States   \n",
+      "12               Vienna, Austria   \n",
+      "13        London, United Kingdom   \n",
+      "14                          None   \n",
+      "15                 United States   \n",
+      "16                  New York, NY   \n",
+      "17                      Michigan   \n",
+      "18            Berne, Switzerland   \n",
+      "19                          None   \n",
+      "20                          None   \n",
+      "21               Santa Monica CA   \n",
+      "22                          None   \n",
+      "23               Berlin, Germany   \n",
+      "24                   Chicago, IL   \n",
+      "25                  New York, NY   \n",
+      "26                          None   \n",
+      "27                Versailles, KY   \n",
+      "28                Pittsburgh, PA   \n",
+      "29                 Nashville, TN   \n",
+      "...                          ...   \n",
+      "40295                       None   \n",
+      "40296                       None   \n",
+      "40297                       None   \n",
+      "40298       Tilburg, Netherlands   \n",
+      "40299                       None   \n",
+      "40300                       None   \n",
+      "40301                       None   \n",
+      "40302                       None   \n",
+      "40303                       None   \n",
+      "40304                       None   \n",
+      "40305                       None   \n",
+      "40306                       None   \n",
+      "40307                       None   \n",
+      "40308                       None   \n",
+      "40309                    Hungary   \n",
+      "40310                       None   \n",
+      "40311                       None   \n",
+      "40312                       None   \n",
+      "40313                       None   \n",
+      "40314                       None   \n",
+      "40315                       None   \n",
+      "40316                       None   \n",
+      "40317                       None   \n",
+      "40318                Switzerland   \n",
+      "40319                       None   \n",
+      "40320                       None   \n",
+      "40321                       None   \n",
+      "40322              United States   \n",
+      "40323                       None   \n",
+      "40324                      India   \n",
+      "\n",
+      "                                                 AboutMe  Views  UpVotes  \\\n",
+      "0      <p>Hi, I'm not really a person.</p>\\n\\n<p>I'm ...      0     5007   \n",
+      "1      <p>Developer on the StackOverflow team.  Find ...     25        3   \n",
+      "2      <p><a href=\"http://blog.stackoverflow.com/2009...     22       19   \n",
+      "3      <p>currently at a startup in SF</p>\\n\\n<p>form...     11        0   \n",
+      "4      <p>Quantitative researcher focusing on statist...   1145      662   \n",
+      "5      <ul>\\n<li>PhD in CS/AI/Machine Learning/Cognit...    114       47   \n",
+      "6      I'm a recent graduate of UC Davis in Economics...     56       20   \n",
+      "7      <p>I'm a statistics lecturer at Newcastle Univ...   1089      604   \n",
+      "8      Bioinformatician\\\\nVirology\\\\nGenetics\\\\nBiolo...     20        2   \n",
+      "9      <p>data_stuff &lt;- paste('data', c('scientist...     10       10   \n",
+      "10     <p>I design stuff for Stack Exchange. Also a p...     10        5   \n",
+      "11     Undergraduate studying Environmental Engineeri...    178       44   \n",
+      "12                                                  None      8        0   \n",
+      "13                                                  None      4        7   \n",
+      "14                                                  None     14       13   \n",
+      "15                           <p>Software engineer.</p>\\n      8       16   \n",
+      "16     <p>I'm an assistant professor in mathematics a...     13        2   \n",
+      "17                                                  None      6        0   \n",
+      "18     <p>Researcher in spatial epidemiology &amp; GI...     90      693   \n",
+      "19     <p>I design and build Grant and Program manage...     52       34   \n",
+      "20                                                  None     48       36   \n",
+      "21     <p>I am the founder and CEO of <a href=\"http:/...    641      328   \n",
+      "22                                                  None    257      138   \n",
+      "23     <p>My name is Benjamin Dumke-von der Ehe. I am...     10        2   \n",
+      "24     I'm a data guy not a programmer. But sometimes...    318       28   \n",
+      "25     <p>Interested primarily in econometric analysi...    312       40   \n",
+      "26                                                  None     11        2   \n",
+      "27     <p>Consulting analyst for the San Diego Padres...     27       23   \n",
+      "28                                                  None      4        9   \n",
+      "29     <p>I'm finishing up my Ph.D. in Human Genetics...    173       26   \n",
+      "...                                                  ...    ...      ...   \n",
+      "40295                                               None      0        0   \n",
+      "40296                                               None      1        0   \n",
+      "40297                                               None      0        0   \n",
+      "40298  <p>I like maths, swimming, food and penguins!<...      0        1   \n",
+      "40299  <p>MD mesmerized by data science, TeX user, R ...      0        0   \n",
+      "40300                                               None      0        0   \n",
+      "40301  <p>I'm a self-taught programmer and linux powe...      1        0   \n",
+      "40302                                               None      0        0   \n",
+      "40303                                               None      0        0   \n",
+      "40304                                               None      0        0   \n",
+      "40305                                               None      0        0   \n",
+      "40306                                               None      1        0   \n",
+      "40307                                               None      0        0   \n",
+      "40308                                               None      0        0   \n",
+      "40309                                               None      0        0   \n",
+      "40310                                               None      1        0   \n",
+      "40311                                               None      0        0   \n",
+      "40312                                               None      0        0   \n",
+      "40313                                               None      0        0   \n",
+      "40314                                               None      0        0   \n",
+      "40315                                               None      0        0   \n",
+      "40316                                               None      0        0   \n",
+      "40317  <p>Be the change that you want to see in the w...      0        0   \n",
+      "40318                                               None      0        1   \n",
+      "40319                                               None      0        0   \n",
+      "40320                                               None      0        0   \n",
+      "40321                                               None      1        0   \n",
+      "40322                                               None      0        0   \n",
+      "40323  <p>Stats noobie, product, marketing &amp; medi...      1        0   \n",
+      "40324                         <p>Maths Enthusiast </p>\\n      0        0   \n",
+      "\n",
+      "       DownVotes  AccountId   Age  \\\n",
+      "0           1920         -1   NaN   \n",
+      "1              0          2  37.0   \n",
+      "2              0          3  35.0   \n",
+      "3              0       1998  28.0   \n",
+      "4              5      54503  35.0   \n",
+      "5              0      46050  41.0   \n",
+      "6              0      49514  28.0   \n",
+      "7             25      70002  36.0   \n",
+      "8              0      23234  44.0   \n",
+      "9              0      47893  40.0   \n",
+      "10             0      21721  38.0   \n",
+      "11             1      46029  28.0   \n",
+      "12             0     189902  35.0   \n",
+      "13             0      10996  31.0   \n",
+      "14             1     509454   NaN   \n",
+      "15             0      69872  44.0   \n",
+      "16             0     501919  34.0   \n",
+      "17             0      40640  33.0   \n",
+      "18             6     124416   NaN   \n",
+      "19             1      21565  46.0   \n",
+      "20             1      85249   NaN   \n",
+      "21            23     504968  62.0   \n",
+      "22             7     134002   NaN   \n",
+      "23             0      40051  34.0   \n",
+      "24             1      17035  42.0   \n",
+      "25             3      48399   NaN   \n",
+      "26             0     137440   NaN   \n",
+      "27             0     509455   NaN   \n",
+      "28             0      13043  26.0   \n",
+      "29             1     330276  31.0   \n",
+      "...          ...        ...   ...   \n",
+      "40295          0    5024818   NaN   \n",
+      "40296          0    5024833   NaN   \n",
+      "40297          0    5024897   NaN   \n",
+      "40298          0    1402294  23.0   \n",
+      "40299          0    3943551   NaN   \n",
+      "40300          0    5025125   NaN   \n",
+      "40301          0    3620179   NaN   \n",
+      "40302          0    5025186   NaN   \n",
+      "40303          0    5025192   NaN   \n",
+      "40304          0    3293263   NaN   \n",
+      "40305          0    3808774   NaN   \n",
+      "40306          0    5025362   NaN   \n",
+      "40307          0    5025477   NaN   \n",
+      "40308          0    5025991   NaN   \n",
+      "40309          0    1447761  36.0   \n",
+      "40310          0    5026082   NaN   \n",
+      "40311          0    5026094   NaN   \n",
+      "40312          0    3335078   NaN   \n",
+      "40313          0     510194   NaN   \n",
+      "40314          0    5026427   NaN   \n",
+      "40315          0    5026468   NaN   \n",
+      "40316          0    5026613   NaN   \n",
+      "40317          0    1239737   NaN   \n",
+      "40318          0    3142440   NaN   \n",
+      "40319          0    5026843   NaN   \n",
+      "40320          0    5026902   NaN   \n",
+      "40321          0    5026998   NaN   \n",
+      "40322          0     481766   NaN   \n",
+      "40323          0     976289   NaN   \n",
+      "40324          0    5027354   NaN   \n",
+      "\n",
+      "                                         ProfileImageUrl  \n",
+      "0                                                   None  \n",
+      "1                                                   None  \n",
+      "2                                                   None  \n",
+      "3                     http://i.stack.imgur.com/d1oHX.jpg  \n",
+      "4                                                   None  \n",
+      "5                                                   None  \n",
+      "6                                                   None  \n",
+      "7                                                   None  \n",
+      "8                                                   None  \n",
+      "9                                                   None  \n",
+      "10                                                  None  \n",
+      "11                                                  None  \n",
+      "12                                                  None  \n",
+      "13                                                  None  \n",
+      "14                                                  None  \n",
+      "15                                                  None  \n",
+      "16                                                  None  \n",
+      "17                                                  None  \n",
+      "18                                                  None  \n",
+      "19                                                  None  \n",
+      "20                                                  None  \n",
+      "21                                                  None  \n",
+      "22                                                  None  \n",
+      "23                                                  None  \n",
+      "24                                                  None  \n",
+      "25                                                  None  \n",
+      "26                                                  None  \n",
+      "27                    http://i.stack.imgur.com/km1pr.jpg  \n",
+      "28                                                  None  \n",
+      "29                                                  None  \n",
+      "...                                                  ...  \n",
+      "40295                                               None  \n",
+      "40296                                               None  \n",
+      "40297  https://www.gravatar.com/avatar/2bc72d263cc5a8...  \n",
+      "40298  https://www.gravatar.com/avatar/a52832f3202953...  \n",
+      "40299  https://www.gravatar.com/avatar/285ba1e160c296...  \n",
+      "40300  http://graph.facebook.com/100000041001887/pict...  \n",
+      "40301  https://www.gravatar.com/avatar/1f8dbbc900087e...  \n",
+      "40302  https://lh3.googleusercontent.com/-8iERz9S6Zr8...  \n",
+      "40303  https://lh6.googleusercontent.com/--7hwjXqt-Zs...  \n",
+      "40304  https://www.gravatar.com/avatar/c9e31787de1366...  \n",
+      "40305                                               None  \n",
+      "40306                                               None  \n",
+      "40307                                               None  \n",
+      "40308                                               None  \n",
+      "40309  https://www.gravatar.com/avatar/70c18b82b058c1...  \n",
+      "40310  https://www.gravatar.com/avatar/d9b1e7660eb8ed...  \n",
+      "40311                                               None  \n",
+      "40312  https://www.gravatar.com/avatar/072b4df5e16f4e...  \n",
+      "40313       http://i.stack.imgur.com/AvRzI.jpg?s=128&g=1  \n",
+      "40314                                               None  \n",
+      "40315                                               None  \n",
+      "40316  https://www.gravatar.com/avatar/93313f90fbaf1e...  \n",
+      "40317  https://www.gravatar.com/avatar/cbae78493ed218...  \n",
+      "40318  https://www.gravatar.com/avatar/89f8e6f01faafa...  \n",
+      "40319                                               None  \n",
+      "40320  http://graph.facebook.com/665821703/picture?ty...  \n",
+      "40321                                               None  \n",
+      "40322  https://www.gravatar.com/avatar/faa7a3fdbd8308...  \n",
+      "40323  https://www.gravatar.com/avatar/6d9e9fa6b783a3...  \n",
+      "40324  https://lh4.googleusercontent.com/-ZsXhwVaFmiY...  \n",
+      "\n",
+      "[40325 rows x 14 columns]\n"
+     ]
+    }
+   ],
+   "source": [
+    "UsersTable.rename(columns={'Id':'userId'},inplace=True)\n",
+    "print(UsersTable)\n"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -79,10 +641,234 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 36,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>Id</th>\n",
+       "      <th>PostTypeId</th>\n",
+       "      <th>AcceptedAnswerId</th>\n",
+       "      <th>CreaionDate</th>\n",
+       "      <th>Score</th>\n",
+       "      <th>ViewCount</th>\n",
+       "      <th>Body</th>\n",
+       "      <th>OwnerUserId</th>\n",
+       "      <th>LasActivityDate</th>\n",
+       "      <th>Title</th>\n",
+       "      <th>...</th>\n",
+       "      <th>AnswerCount</th>\n",
+       "      <th>CommentCount</th>\n",
+       "      <th>FavoriteCount</th>\n",
+       "      <th>LastEditorUserId</th>\n",
+       "      <th>LastEditDate</th>\n",
+       "      <th>CommunityOwnedDate</th>\n",
+       "      <th>ParentId</th>\n",
+       "      <th>ClosedDate</th>\n",
+       "      <th>OwnerDisplayName</th>\n",
+       "      <th>LastEditorDisplayName</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>2010-07-19 19:12:12</td>\n",
+       "      <td>23</td>\n",
+       "      <td>1278.0</td>\n",
+       "      <td>&lt;p&gt;How should I elicit prior distributions fro...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2010-09-15 21:08:26</td>\n",
+       "      <td>Eliciting priors from experts</td>\n",
+       "      <td>...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>14.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>2</td>\n",
+       "      <td>1</td>\n",
+       "      <td>59.0</td>\n",
+       "      <td>2010-07-19 19:12:57</td>\n",
+       "      <td>22</td>\n",
+       "      <td>8198.0</td>\n",
+       "      <td>&lt;p&gt;In many different statistical methods there...</td>\n",
+       "      <td>24.0</td>\n",
+       "      <td>2012-11-12 09:21:54</td>\n",
+       "      <td>What is normality?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>88.0</td>\n",
+       "      <td>2010-08-07 17:56:44</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>3</td>\n",
+       "      <td>1</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2010-07-19 19:13:28</td>\n",
+       "      <td>54</td>\n",
+       "      <td>3613.0</td>\n",
+       "      <td>&lt;p&gt;What are some valuable Statistical Analysis...</td>\n",
+       "      <td>18.0</td>\n",
+       "      <td>2013-05-27 14:48:36</td>\n",
+       "      <td>What are some valuable Statistical Analysis op...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>19.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>183.0</td>\n",
+       "      <td>2011-02-12 05:50:03</td>\n",
+       "      <td>2010-07-19 19:13:28</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>4</td>\n",
+       "      <td>1</td>\n",
+       "      <td>135.0</td>\n",
+       "      <td>2010-07-19 19:13:31</td>\n",
+       "      <td>13</td>\n",
+       "      <td>5224.0</td>\n",
+       "      <td>&lt;p&gt;I have two groups of data.  Each with a dif...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-09-08 03:00:19</td>\n",
+       "      <td>Assessing the significance of differences in d...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>5</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:14:43</td>\n",
+       "      <td>81</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;The R-project&lt;/p&gt;\\n\\n&lt;p&gt;&lt;a href=\"http://www...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:21:15</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:21:15</td>\n",
+       "      <td>2010-07-19 19:14:43</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "<p>5 rows × 21 columns</p>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "   Id  PostTypeId  AcceptedAnswerId         CreaionDate  Score  ViewCount  \\\n",
+       "0   1           1              15.0 2010-07-19 19:12:12     23     1278.0   \n",
+       "1   2           1              59.0 2010-07-19 19:12:57     22     8198.0   \n",
+       "2   3           1               5.0 2010-07-19 19:13:28     54     3613.0   \n",
+       "3   4           1             135.0 2010-07-19 19:13:31     13     5224.0   \n",
+       "4   5           2               NaN 2010-07-19 19:14:43     81        NaN   \n",
+       "\n",
+       "                                                Body  OwnerUserId  \\\n",
+       "0  <p>How should I elicit prior distributions fro...          8.0   \n",
+       "1  <p>In many different statistical methods there...         24.0   \n",
+       "2  <p>What are some valuable Statistical Analysis...         18.0   \n",
+       "3  <p>I have two groups of data.  Each with a dif...         23.0   \n",
+       "4  <p>The R-project</p>\\n\\n<p><a href=\"http://www...         23.0   \n",
+       "\n",
+       "      LasActivityDate                                              Title  ...  \\\n",
+       "0 2010-09-15 21:08:26                      Eliciting priors from experts  ...   \n",
+       "1 2012-11-12 09:21:54                                 What is normality?  ...   \n",
+       "2 2013-05-27 14:48:36  What are some valuable Statistical Analysis op...  ...   \n",
+       "3 2010-09-08 03:00:19  Assessing the significance of differences in d...  ...   \n",
+       "4 2010-07-19 19:21:15                                               None  ...   \n",
+       "\n",
+       "  AnswerCount  CommentCount  FavoriteCount  LastEditorUserId  \\\n",
+       "0         5.0             1           14.0               NaN   \n",
+       "1         7.0             1            8.0              88.0   \n",
+       "2        19.0             4           36.0             183.0   \n",
+       "3         5.0             2            2.0               NaN   \n",
+       "4         NaN             3            NaN              23.0   \n",
+       "\n",
+       "         LastEditDate  CommunityOwnedDate ParentId  ClosedDate  \\\n",
+       "0                 NaT                 NaT      NaN         NaT   \n",
+       "1 2010-08-07 17:56:44                 NaT      NaN         NaT   \n",
+       "2 2011-02-12 05:50:03 2010-07-19 19:13:28      NaN         NaT   \n",
+       "3                 NaT                 NaT      NaN         NaT   \n",
+       "4 2010-07-19 19:21:15 2010-07-19 19:14:43      3.0         NaT   \n",
+       "\n",
+       "  OwnerDisplayName LastEditorDisplayName  \n",
+       "0             None                  None  \n",
+       "1             None                  None  \n",
+       "2             None                  None  \n",
+       "3             None                  None  \n",
+       "4             None                  None  \n",
+       "\n",
+       "[5 rows x 21 columns]"
+      ]
+     },
+     "execution_count": 36,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "TablePosts = pandas.read_sql_query('SELECT * FROM stats.posts;', conexion)\n",
+    "TablePosts.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -93,10 +879,1914 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 41,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
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+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>postId</th>\n",
+       "      <th>PostTypeId</th>\n",
+       "      <th>AcceptedAnswerId</th>\n",
+       "      <th>CreaionDate</th>\n",
+       "      <th>Score</th>\n",
+       "      <th>ViewCount</th>\n",
+       "      <th>Body</th>\n",
+       "      <th>userId</th>\n",
+       "      <th>LasActivityDate</th>\n",
+       "      <th>Title</th>\n",
+       "      <th>...</th>\n",
+       "      <th>AnswerCount</th>\n",
+       "      <th>CommentCount</th>\n",
+       "      <th>FavoriteCount</th>\n",
+       "      <th>LastEditorUserId</th>\n",
+       "      <th>LastEditDate</th>\n",
+       "      <th>CommunityOwnedDate</th>\n",
+       "      <th>ParentId</th>\n",
+       "      <th>ClosedDate</th>\n",
+       "      <th>OwnerDisplayName</th>\n",
+       "      <th>LastEditorDisplayName</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>2010-07-19 19:12:12</td>\n",
+       "      <td>23</td>\n",
+       "      <td>1278.0</td>\n",
+       "      <td>&lt;p&gt;How should I elicit prior distributions fro...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2010-09-15 21:08:26</td>\n",
+       "      <td>Eliciting priors from experts</td>\n",
+       "      <td>...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>14.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>2</td>\n",
+       "      <td>1</td>\n",
+       "      <td>59.0</td>\n",
+       "      <td>2010-07-19 19:12:57</td>\n",
+       "      <td>22</td>\n",
+       "      <td>8198.0</td>\n",
+       "      <td>&lt;p&gt;In many different statistical methods there...</td>\n",
+       "      <td>24.0</td>\n",
+       "      <td>2012-11-12 09:21:54</td>\n",
+       "      <td>What is normality?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>88.0</td>\n",
+       "      <td>2010-08-07 17:56:44</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>3</td>\n",
+       "      <td>1</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2010-07-19 19:13:28</td>\n",
+       "      <td>54</td>\n",
+       "      <td>3613.0</td>\n",
+       "      <td>&lt;p&gt;What are some valuable Statistical Analysis...</td>\n",
+       "      <td>18.0</td>\n",
+       "      <td>2013-05-27 14:48:36</td>\n",
+       "      <td>What are some valuable Statistical Analysis op...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>19.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>183.0</td>\n",
+       "      <td>2011-02-12 05:50:03</td>\n",
+       "      <td>2010-07-19 19:13:28</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>4</td>\n",
+       "      <td>1</td>\n",
+       "      <td>135.0</td>\n",
+       "      <td>2010-07-19 19:13:31</td>\n",
+       "      <td>13</td>\n",
+       "      <td>5224.0</td>\n",
+       "      <td>&lt;p&gt;I have two groups of data.  Each with a dif...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-09-08 03:00:19</td>\n",
+       "      <td>Assessing the significance of differences in d...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>5</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:14:43</td>\n",
+       "      <td>81</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;The R-project&lt;/p&gt;\\n\\n&lt;p&gt;&lt;a href=\"http://www...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:21:15</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:21:15</td>\n",
+       "      <td>2010-07-19 19:14:43</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>5</th>\n",
+       "      <td>6</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:14:44</td>\n",
+       "      <td>152</td>\n",
+       "      <td>29229.0</td>\n",
+       "      <td>&lt;p&gt;Last year, I read a blog post from &lt;a href=...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2014-05-29 03:54:31</td>\n",
+       "      <td>The Two Cultures: statistics vs. machine learn...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>5</td>\n",
+       "      <td>137.0</td>\n",
+       "      <td>22047.0</td>\n",
+       "      <td>2013-06-07 06:38:10</td>\n",
+       "      <td>2010-08-09 13:05:50</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>6</th>\n",
+       "      <td>7</td>\n",
+       "      <td>1</td>\n",
+       "      <td>18.0</td>\n",
+       "      <td>2010-07-19 19:15:59</td>\n",
+       "      <td>76</td>\n",
+       "      <td>5808.0</td>\n",
+       "      <td>&lt;p&gt;I've been working on a new method for analy...</td>\n",
+       "      <td>38.0</td>\n",
+       "      <td>2013-12-28 06:53:10</td>\n",
+       "      <td>Locating freely available data samples</td>\n",
+       "      <td>...</td>\n",
+       "      <td>24.0</td>\n",
+       "      <td>3</td>\n",
+       "      <td>79.0</td>\n",
+       "      <td>253.0</td>\n",
+       "      <td>2013-09-26 21:50:36</td>\n",
+       "      <td>2010-07-20 20:50:48</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>7</th>\n",
+       "      <td>8</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:16:21</td>\n",
+       "      <td>0</td>\n",
+       "      <td>288.0</td>\n",
+       "      <td>&lt;p&gt;Sorry, but the emptyness was a bit overwhel...</td>\n",
+       "      <td>37.0</td>\n",
+       "      <td>2010-10-18 07:57:31</td>\n",
+       "      <td>So how many staticians *does* it take to screw...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>449.0</td>\n",
+       "      <td>2010-10-18 07:57:31</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 20:19:46</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>8</th>\n",
+       "      <td>9</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:16:27</td>\n",
+       "      <td>13</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://incanter.org/\"&gt;Incanter&lt;/a&gt;...</td>\n",
+       "      <td>50.0</td>\n",
+       "      <td>2010-07-19 19:16:27</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2010-07-19 19:16:27</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>9</th>\n",
+       "      <td>10</td>\n",
+       "      <td>1</td>\n",
+       "      <td>1887.0</td>\n",
+       "      <td>2010-07-19 19:17:47</td>\n",
+       "      <td>23</td>\n",
+       "      <td>21925.0</td>\n",
+       "      <td>&lt;p&gt;Many studies in the social sciences use Lik...</td>\n",
+       "      <td>24.0</td>\n",
+       "      <td>2012-10-23 17:33:41</td>\n",
+       "      <td>Under what conditions should Likert scales be ...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>4.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>12.0</td>\n",
+       "      <td>919.0</td>\n",
+       "      <td>2011-03-30 15:31:46</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>10</th>\n",
+       "      <td>11</td>\n",
+       "      <td>1</td>\n",
+       "      <td>1201.0</td>\n",
+       "      <td>2010-07-19 19:18:30</td>\n",
+       "      <td>2</td>\n",
+       "      <td>224.0</td>\n",
+       "      <td>&lt;p&gt;Is there a good, modern treatment covering ...</td>\n",
+       "      <td>34.0</td>\n",
+       "      <td>2010-08-03 21:50:09</td>\n",
+       "      <td>Multivariate Interpolation Approaches</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>34.0</td>\n",
+       "      <td>2010-07-28 07:58:52</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>11</th>\n",
+       "      <td>12</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:18:41</td>\n",
+       "      <td>20</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;See my response to &lt;a href=\"http://stackove...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2010-07-19 19:18:41</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2011-08-12 20:29:33</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>12</th>\n",
+       "      <td>13</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:18:56</td>\n",
+       "      <td>14</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Machine Learning seems to have its basis in...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:18:56</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>6.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>13</th>\n",
+       "      <td>14</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:19:03</td>\n",
+       "      <td>5</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;I second that Jay. Why is R valuable? Here'...</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>2010-07-19 19:19:03</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2010-07-19 19:19:03</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>14</th>\n",
+       "      <td>15</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:19:46</td>\n",
+       "      <td>13</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;John Cook gives some interesting recommenda...</td>\n",
+       "      <td>6.0</td>\n",
+       "      <td>2010-07-19 19:19:46</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>15</th>\n",
+       "      <td>16</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:22:31</td>\n",
+       "      <td>16</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Two projects spring to mind:&lt;/p&gt;\\n\\n&lt;ol&gt;\\n&lt;...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2010-07-19 20:43:02</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2010-07-19 20:43:02</td>\n",
+       "      <td>2010-07-19 19:22:31</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>16</th>\n",
+       "      <td>17</td>\n",
+       "      <td>1</td>\n",
+       "      <td>29.0</td>\n",
+       "      <td>2010-07-19 19:24:12</td>\n",
+       "      <td>9</td>\n",
+       "      <td>1261.0</td>\n",
+       "      <td>&lt;p&gt;I have four competing models which I use to...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2012-01-22 23:34:51</td>\n",
+       "      <td>How can I adapt ANOVA for binary data?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>7972.0</td>\n",
+       "      <td>2012-01-22 23:34:51</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>user28</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>17</th>\n",
+       "      <td>18</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:24:18</td>\n",
+       "      <td>31</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Also see the UCI machine learning Data Repo...</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>2010-07-19 19:24:18</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2011-08-12 20:31:32</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>18</th>\n",
+       "      <td>19</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:24:21</td>\n",
+       "      <td>12</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://www.gapminder.org/data/\"&gt;Ga...</td>\n",
+       "      <td>55.0</td>\n",
+       "      <td>2010-07-19 19:24:21</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2011-08-12 20:29:45</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>19</th>\n",
+       "      <td>20</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:24:35</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;The assumption of normality assumes your da...</td>\n",
+       "      <td>37.0</td>\n",
+       "      <td>2010-07-19 19:24:35</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>20</th>\n",
+       "      <td>21</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:24:36</td>\n",
+       "      <td>4</td>\n",
+       "      <td>184.0</td>\n",
+       "      <td>&lt;p&gt;What are some of the ways to forecast demog...</td>\n",
+       "      <td>59.0</td>\n",
+       "      <td>2010-09-30 21:14:45</td>\n",
+       "      <td>Forecasting demographic census</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>930.0</td>\n",
+       "      <td>2010-09-30 21:14:45</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>21</th>\n",
+       "      <td>22</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:25:39</td>\n",
+       "      <td>102</td>\n",
+       "      <td>21916.0</td>\n",
+       "      <td>&lt;p&gt;How would you describe in plain English the...</td>\n",
+       "      <td>66.0</td>\n",
+       "      <td>2014-06-05 02:06:32</td>\n",
+       "      <td>Bayesian and frequentist reasoning in plain En...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>67.0</td>\n",
+       "      <td>930.0</td>\n",
+       "      <td>2011-10-04 07:05:14</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>22</th>\n",
+       "      <td>23</td>\n",
+       "      <td>1</td>\n",
+       "      <td>91.0</td>\n",
+       "      <td>2010-07-19 19:26:04</td>\n",
+       "      <td>10</td>\n",
+       "      <td>7694.0</td>\n",
+       "      <td>&lt;p&gt;How can I find the PDF (probability density...</td>\n",
+       "      <td>69.0</td>\n",
+       "      <td>2010-07-20 08:52:27</td>\n",
+       "      <td>Finding the PDF given the CDF</td>\n",
+       "      <td>...</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>23</th>\n",
+       "      <td>24</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:26:13</td>\n",
+       "      <td>17</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;For doing a variety of MCMC tasks in Python...</td>\n",
+       "      <td>61.0</td>\n",
+       "      <td>2010-07-19 19:26:13</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2010-07-19 19:26:13</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>24</th>\n",
+       "      <td>25</td>\n",
+       "      <td>1</td>\n",
+       "      <td>32.0</td>\n",
+       "      <td>2010-07-19 19:27:13</td>\n",
+       "      <td>7</td>\n",
+       "      <td>2095.0</td>\n",
+       "      <td>&lt;p&gt;What modern tools (Windows-based) do you su...</td>\n",
+       "      <td>69.0</td>\n",
+       "      <td>2014-08-13 20:29:48</td>\n",
+       "      <td>Tools for modeling financial time series</td>\n",
+       "      <td>...</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>69.0</td>\n",
+       "      <td>2010-07-26 23:38:29</td>\n",
+       "      <td>2010-07-26 23:38:29</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>25</th>\n",
+       "      <td>26</td>\n",
+       "      <td>1</td>\n",
+       "      <td>61.0</td>\n",
+       "      <td>2010-07-19 19:27:43</td>\n",
+       "      <td>18</td>\n",
+       "      <td>3476.0</td>\n",
+       "      <td>&lt;p&gt;What is a standard deviation, how is it cal...</td>\n",
+       "      <td>75.0</td>\n",
+       "      <td>2013-07-30 10:19:04</td>\n",
+       "      <td>What is a standard deviation?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>14</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>22047.0</td>\n",
+       "      <td>2013-07-30 10:19:04</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>26</th>\n",
+       "      <td>27</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://mathforum.org/workshops/sum...</td>\n",
+       "      <td>68.0</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2011-08-12 20:29:55</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>27</th>\n",
+       "      <td>28</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>6</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://www.gnu.org/software/gsl/\" ...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>user28</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>28</th>\n",
+       "      <td>29</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:28:15</td>\n",
+       "      <td>5</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Contingency table (chi-square). Also Logist...</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>2010-07-19 19:28:15</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>17.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>29</th>\n",
+       "      <td>30</td>\n",
+       "      <td>1</td>\n",
+       "      <td>55.0</td>\n",
+       "      <td>2010-07-19 19:28:34</td>\n",
+       "      <td>7</td>\n",
+       "      <td>705.0</td>\n",
+       "      <td>&lt;p&gt;Which methods are used for testing random v...</td>\n",
+       "      <td>69.0</td>\n",
+       "      <td>2011-05-12 18:38:27</td>\n",
+       "      <td>Testing random variate generation algorithms</td>\n",
+       "      <td>...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>919.0</td>\n",
+       "      <td>2010-08-25 14:12:54</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>...</th>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91946</th>\n",
+       "      <td>115346</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 13:15:18</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;First, let's try to simulate some data with...</td>\n",
+       "      <td>42434.0</td>\n",
+       "      <td>2014-09-13 13:15:18</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>113980.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91947</th>\n",
+       "      <td>115348</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 15:17:03</td>\n",
+       "      <td>0</td>\n",
+       "      <td>18.0</td>\n",
+       "      <td>&lt;p&gt;In the game of Bridge, 52 cards are distrub...</td>\n",
+       "      <td>55564.0</td>\n",
+       "      <td>2014-09-13 16:25:32</td>\n",
+       "      <td>Please help me interpret this goodness of fit ...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>55564.0</td>\n",
+       "      <td>2014-09-13 15:41:36</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91948</th>\n",
+       "      <td>115350</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 15:26:01</td>\n",
+       "      <td>0</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>&lt;p&gt;How do we specify negative costs in rpart? ...</td>\n",
+       "      <td>55731.0</td>\n",
+       "      <td>2014-09-13 15:26:01</td>\n",
+       "      <td>Specifying negative costs (benefits) in rpart'...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91949</th>\n",
+       "      <td>115351</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 15:32:18</td>\n",
+       "      <td>1</td>\n",
+       "      <td>9.0</td>\n",
+       "      <td>&lt;p&gt;If one is conducting a survey in which all ...</td>\n",
+       "      <td>7331.0</td>\n",
+       "      <td>2014-09-13 15:43:23</td>\n",
+       "      <td>Sampling frame of a voluntary survey</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>7290.0</td>\n",
+       "      <td>2014-09-13 15:43:23</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91950</th>\n",
+       "      <td>115352</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 15:56:55</td>\n",
+       "      <td>0</td>\n",
+       "      <td>16.0</td>\n",
+       "      <td>&lt;p&gt;For example, I was looking at &lt;a href=\"http...</td>\n",
+       "      <td>55734.0</td>\n",
+       "      <td>2014-09-13 16:15:30</td>\n",
+       "      <td>Is there a way to estimate the distribution fr...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91951</th>\n",
+       "      <td>115353</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 16:15:30</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;I have strong reservations about whether me...</td>\n",
+       "      <td>7290.0</td>\n",
+       "      <td>2014-09-13 16:15:30</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115352.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91952</th>\n",
+       "      <td>115354</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 16:25:32</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;If all the null hypotheses were true, 5% of...</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-13 16:25:32</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115348.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91953</th>\n",
+       "      <td>115355</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 16:30:00</td>\n",
+       "      <td>3</td>\n",
+       "      <td>49.0</td>\n",
+       "      <td>&lt;p&gt;I have a methodological question, and there...</td>\n",
+       "      <td>35413.0</td>\n",
+       "      <td>2014-09-13 18:53:58</td>\n",
+       "      <td>Adjust for everything you have in propensity s...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91954</th>\n",
+       "      <td>115356</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 16:34:58</td>\n",
+       "      <td>1</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>&lt;p&gt;I'm a beginner in statistics and I have to ...</td>\n",
+       "      <td>55733.0</td>\n",
+       "      <td>2014-09-13 20:45:45</td>\n",
+       "      <td>How to interpret glmer results (variance, corr...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>55733.0</td>\n",
+       "      <td>2014-09-13 20:45:45</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91955</th>\n",
+       "      <td>115357</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 17:07:54</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;I've personally been asking this question f...</td>\n",
+       "      <td>44142.0</td>\n",
+       "      <td>2014-09-13 17:07:54</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115355.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91956</th>\n",
+       "      <td>115358</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 17:29:23</td>\n",
+       "      <td>2</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>&lt;p&gt;Are there any formulae for the quantiles of...</td>\n",
+       "      <td>1569.0</td>\n",
+       "      <td>2014-09-14 02:54:13</td>\n",
+       "      <td>Quantiles of a compound gamma/negative binomia...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91957</th>\n",
+       "      <td>115360</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 18:06:50</td>\n",
+       "      <td>2</td>\n",
+       "      <td>40.0</td>\n",
+       "      <td>&lt;p&gt;Is Student's t test a Wald test?&lt;/p&gt;\\n\\n&lt;p&gt;...</td>\n",
+       "      <td>55738.0</td>\n",
+       "      <td>2014-09-13 18:06:50</td>\n",
+       "      <td>Is Student's t test a Wald test?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91958</th>\n",
+       "      <td>115361</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 18:36:36</td>\n",
+       "      <td>0</td>\n",
+       "      <td>12.0</td>\n",
+       "      <td>&lt;p&gt;Given the biometric match scores, I am requ...</td>\n",
+       "      <td>55383.0</td>\n",
+       "      <td>2014-09-13 18:36:36</td>\n",
+       "      <td>Plotting of density estimates in matlab</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91959</th>\n",
+       "      <td>115362</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 18:44:31</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Theoretical insight, institutional knowledg...</td>\n",
+       "      <td>7071.0</td>\n",
+       "      <td>2014-09-13 18:53:58</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>7071.0</td>\n",
+       "      <td>2014-09-13 18:53:58</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115355.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91960</th>\n",
+       "      <td>115363</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 19:37:20</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;I think I got a very simple answer.&lt;/p&gt;\\n\\n...</td>\n",
+       "      <td>2676.0</td>\n",
+       "      <td>2014-09-13 19:37:20</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115279.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91961</th>\n",
+       "      <td>115364</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 19:50:17</td>\n",
+       "      <td>0</td>\n",
+       "      <td>11.0</td>\n",
+       "      <td>&lt;p&gt;I'm trying to find the most similar sample ...</td>\n",
+       "      <td>52858.0</td>\n",
+       "      <td>2014-09-13 21:30:41</td>\n",
+       "      <td>In search of a proper similarity function</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>52858.0</td>\n",
+       "      <td>2014-09-13 21:30:41</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91962</th>\n",
+       "      <td>115365</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 20:13:11</td>\n",
+       "      <td>-1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;blockquote&gt;\\n  &lt;p&gt;Is there some approach to u...</td>\n",
+       "      <td>28236.0</td>\n",
+       "      <td>2014-09-13 20:13:11</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>108430.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91963</th>\n",
+       "      <td>115366</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 20:36:55</td>\n",
+       "      <td>1</td>\n",
+       "      <td>17.0</td>\n",
+       "      <td>&lt;p&gt;Does any standard statistical software like...</td>\n",
+       "      <td>55742.0</td>\n",
+       "      <td>2014-09-13 23:18:30</td>\n",
+       "      <td>Missing data analysis software</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91964</th>\n",
+       "      <td>115367</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 20:57:24</td>\n",
+       "      <td>1</td>\n",
+       "      <td>97.0</td>\n",
+       "      <td>&lt;p&gt;Jon and Frank ordered 2 footlong sandwiches...</td>\n",
+       "      <td>41961.0</td>\n",
+       "      <td>2014-09-14 02:05:41</td>\n",
+       "      <td>How to add odds? (or how I got the wrong sandw...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>919.0</td>\n",
+       "      <td>2014-09-13 21:11:36</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91965</th>\n",
+       "      <td>115368</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 21:01:39</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;You need to multiply the probabilities with...</td>\n",
+       "      <td>24808.0</td>\n",
+       "      <td>2014-09-13 21:01:39</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115367.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91966</th>\n",
+       "      <td>115369</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 21:27:49</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Line up the four sandwiches in a row where ...</td>\n",
+       "      <td>6633.0</td>\n",
+       "      <td>2014-09-13 21:27:49</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115367.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91967</th>\n",
+       "      <td>115370</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 21:39:30</td>\n",
+       "      <td>1</td>\n",
+       "      <td>13.0</td>\n",
+       "      <td>&lt;p&gt;im analyzing an article for my studies with...</td>\n",
+       "      <td>55744.0</td>\n",
+       "      <td>2014-09-13 21:39:30</td>\n",
+       "      <td>Poisson regression</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91968</th>\n",
+       "      <td>115371</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 21:55:39</td>\n",
+       "      <td>0</td>\n",
+       "      <td>19.0</td>\n",
+       "      <td>&lt;p&gt;I am trying to estimate the school effects ...</td>\n",
+       "      <td>35801.0</td>\n",
+       "      <td>2014-09-13 23:15:00</td>\n",
+       "      <td>Estimation of school effects using xtmixed (in...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>35801.0</td>\n",
+       "      <td>2014-09-13 22:51:35</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91969</th>\n",
+       "      <td>115372</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 23:15:00</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;If prior to running the xtreg command you h...</td>\n",
+       "      <td>48579.0</td>\n",
+       "      <td>2014-09-13 23:15:00</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>9</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115371.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91970</th>\n",
+       "      <td>115373</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 23:18:30</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Yes, the &lt;a href=\"http://cran.r-project.org...</td>\n",
+       "      <td>48579.0</td>\n",
+       "      <td>2014-09-13 23:18:30</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115366.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91971</th>\n",
+       "      <td>115374</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 23:45:39</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;This grew too long for a comment, but I thi...</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-14 02:05:41</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-14 02:05:41</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115367.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91972</th>\n",
+       "      <td>115375</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 23:46:05</td>\n",
+       "      <td>0</td>\n",
+       "      <td>9.0</td>\n",
+       "      <td>&lt;p&gt;Assume a classification problem where there...</td>\n",
+       "      <td>49365.0</td>\n",
+       "      <td>2014-09-14 02:09:23</td>\n",
+       "      <td>Detecting a consistent pattern in a dataset vi...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91973</th>\n",
+       "      <td>115376</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-14 01:27:54</td>\n",
+       "      <td>1</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>&lt;p&gt;My goal is to create a formula that can giv...</td>\n",
+       "      <td>55746.0</td>\n",
+       "      <td>2014-09-14 01:40:55</td>\n",
+       "      <td>How to project video viewcount based on histor...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>7290.0</td>\n",
+       "      <td>2014-09-14 01:40:55</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91974</th>\n",
+       "      <td>115377</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-14 02:03:28</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;As a practical answer to the real questions...</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-14 02:54:13</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-14 02:54:13</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115358.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91975</th>\n",
+       "      <td>115378</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-14 02:09:23</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Decision trees are notoriously &lt;strong&gt;unst...</td>\n",
+       "      <td>7250.0</td>\n",
+       "      <td>2014-09-14 02:09:23</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115375.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "<p>91976 rows × 21 columns</p>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "       postId  PostTypeId  AcceptedAnswerId         CreaionDate  Score  \\\n",
+       "0           1           1              15.0 2010-07-19 19:12:12     23   \n",
+       "1           2           1              59.0 2010-07-19 19:12:57     22   \n",
+       "2           3           1               5.0 2010-07-19 19:13:28     54   \n",
+       "3           4           1             135.0 2010-07-19 19:13:31     13   \n",
+       "4           5           2               NaN 2010-07-19 19:14:43     81   \n",
+       "5           6           1               NaN 2010-07-19 19:14:44    152   \n",
+       "6           7           1              18.0 2010-07-19 19:15:59     76   \n",
+       "7           8           1               NaN 2010-07-19 19:16:21      0   \n",
+       "8           9           2               NaN 2010-07-19 19:16:27     13   \n",
+       "9          10           1            1887.0 2010-07-19 19:17:47     23   \n",
+       "10         11           1            1201.0 2010-07-19 19:18:30      2   \n",
+       "11         12           2               NaN 2010-07-19 19:18:41     20   \n",
+       "12         13           2               NaN 2010-07-19 19:18:56     14   \n",
+       "13         14           2               NaN 2010-07-19 19:19:03      5   \n",
+       "14         15           2               NaN 2010-07-19 19:19:46     13   \n",
+       "15         16           2               NaN 2010-07-19 19:22:31     16   \n",
+       "16         17           1              29.0 2010-07-19 19:24:12      9   \n",
+       "17         18           2               NaN 2010-07-19 19:24:18     31   \n",
+       "18         19           2               NaN 2010-07-19 19:24:21     12   \n",
+       "19         20           2               NaN 2010-07-19 19:24:35      3   \n",
+       "20         21           1               NaN 2010-07-19 19:24:36      4   \n",
+       "21         22           1               NaN 2010-07-19 19:25:39    102   \n",
+       "22         23           1              91.0 2010-07-19 19:26:04     10   \n",
+       "23         24           2               NaN 2010-07-19 19:26:13     17   \n",
+       "24         25           1              32.0 2010-07-19 19:27:13      7   \n",
+       "25         26           1              61.0 2010-07-19 19:27:43     18   \n",
+       "26         27           2               NaN 2010-07-19 19:28:12      4   \n",
+       "27         28           2               NaN 2010-07-19 19:28:12      6   \n",
+       "28         29           2               NaN 2010-07-19 19:28:15      5   \n",
+       "29         30           1              55.0 2010-07-19 19:28:34      7   \n",
+       "...       ...         ...               ...                 ...    ...   \n",
+       "91946  115346           2               NaN 2014-09-13 13:15:18      0   \n",
+       "91947  115348           1               NaN 2014-09-13 15:17:03      0   \n",
+       "91948  115350           1               NaN 2014-09-13 15:26:01      0   \n",
+       "91949  115351           1               NaN 2014-09-13 15:32:18      1   \n",
+       "91950  115352           1               NaN 2014-09-13 15:56:55      0   \n",
+       "91951  115353           2               NaN 2014-09-13 16:15:30      0   \n",
+       "91952  115354           2               NaN 2014-09-13 16:25:32      2   \n",
+       "91953  115355           1               NaN 2014-09-13 16:30:00      3   \n",
+       "91954  115356           1               NaN 2014-09-13 16:34:58      1   \n",
+       "91955  115357           2               NaN 2014-09-13 17:07:54      1   \n",
+       "91956  115358           1               NaN 2014-09-13 17:29:23      2   \n",
+       "91957  115360           1               NaN 2014-09-13 18:06:50      2   \n",
+       "91958  115361           1               NaN 2014-09-13 18:36:36      0   \n",
+       "91959  115362           2               NaN 2014-09-13 18:44:31      2   \n",
+       "91960  115363           2               NaN 2014-09-13 19:37:20      0   \n",
+       "91961  115364           1               NaN 2014-09-13 19:50:17      0   \n",
+       "91962  115365           2               NaN 2014-09-13 20:13:11     -1   \n",
+       "91963  115366           1               NaN 2014-09-13 20:36:55      1   \n",
+       "91964  115367           1               NaN 2014-09-13 20:57:24      1   \n",
+       "91965  115368           2               NaN 2014-09-13 21:01:39      4   \n",
+       "91966  115369           2               NaN 2014-09-13 21:27:49      4   \n",
+       "91967  115370           1               NaN 2014-09-13 21:39:30      1   \n",
+       "91968  115371           1               NaN 2014-09-13 21:55:39      0   \n",
+       "91969  115372           2               NaN 2014-09-13 23:15:00      0   \n",
+       "91970  115373           2               NaN 2014-09-13 23:18:30      0   \n",
+       "91971  115374           2               NaN 2014-09-13 23:45:39      2   \n",
+       "91972  115375           1               NaN 2014-09-13 23:46:05      0   \n",
+       "91973  115376           1               NaN 2014-09-14 01:27:54      1   \n",
+       "91974  115377           2               NaN 2014-09-14 02:03:28      0   \n",
+       "91975  115378           2               NaN 2014-09-14 02:09:23      0   \n",
+       "\n",
+       "       ViewCount                                               Body   userId  \\\n",
+       "0         1278.0  <p>How should I elicit prior distributions fro...      8.0   \n",
+       "1         8198.0  <p>In many different statistical methods there...     24.0   \n",
+       "2         3613.0  <p>What are some valuable Statistical Analysis...     18.0   \n",
+       "3         5224.0  <p>I have two groups of data.  Each with a dif...     23.0   \n",
+       "4            NaN  <p>The R-project</p>\\n\\n<p><a href=\"http://www...     23.0   \n",
+       "5        29229.0  <p>Last year, I read a blog post from <a href=...      5.0   \n",
+       "6         5808.0  <p>I've been working on a new method for analy...     38.0   \n",
+       "7          288.0  <p>Sorry, but the emptyness was a bit overwhel...     37.0   \n",
+       "8            NaN  <p><a href=\"http://incanter.org/\">Incanter</a>...     50.0   \n",
+       "9        21925.0  <p>Many studies in the social sciences use Lik...     24.0   \n",
+       "10         224.0  <p>Is there a good, modern treatment covering ...     34.0   \n",
+       "11           NaN  <p>See my response to <a href=\"http://stackove...      5.0   \n",
+       "12           NaN  <p>Machine Learning seems to have its basis in...     23.0   \n",
+       "13           NaN  <p>I second that Jay. Why is R valuable? Here'...     36.0   \n",
+       "14           NaN  <p>John Cook gives some interesting recommenda...      6.0   \n",
+       "15           NaN  <p>Two projects spring to mind:</p>\\n\\n<ol>\\n<...      8.0   \n",
+       "16        1261.0  <p>I have four competing models which I use to...      NaN   \n",
+       "17           NaN  <p>Also see the UCI machine learning Data Repo...     36.0   \n",
+       "18           NaN  <p><a href=\"http://www.gapminder.org/data/\">Ga...     55.0   \n",
+       "19           NaN  <p>The assumption of normality assumes your da...     37.0   \n",
+       "20         184.0  <p>What are some of the ways to forecast demog...     59.0   \n",
+       "21       21916.0  <p>How would you describe in plain English the...     66.0   \n",
+       "22        7694.0  <p>How can I find the PDF (probability density...     69.0   \n",
+       "23           NaN  <p>For doing a variety of MCMC tasks in Python...     61.0   \n",
+       "24        2095.0  <p>What modern tools (Windows-based) do you su...     69.0   \n",
+       "25        3476.0  <p>What is a standard deviation, how is it cal...     75.0   \n",
+       "26           NaN  <p><a href=\"http://mathforum.org/workshops/sum...     68.0   \n",
+       "27           NaN  <p><a href=\"http://www.gnu.org/software/gsl/\" ...      NaN   \n",
+       "28           NaN  <p>Contingency table (chi-square). Also Logist...     36.0   \n",
+       "29         705.0  <p>Which methods are used for testing random v...     69.0   \n",
+       "...          ...                                                ...      ...   \n",
+       "91946        NaN  <p>First, let's try to simulate some data with...  42434.0   \n",
+       "91947       18.0  <p>In the game of Bridge, 52 cards are distrub...  55564.0   \n",
+       "91948        3.0  <p>How do we specify negative costs in rpart? ...  55731.0   \n",
+       "91949        9.0  <p>If one is conducting a survey in which all ...   7331.0   \n",
+       "91950       16.0  <p>For example, I was looking at <a href=\"http...  55734.0   \n",
+       "91951        NaN  <p>I have strong reservations about whether me...   7290.0   \n",
+       "91952        NaN  <p>If all the null hypotheses were true, 5% of...    805.0   \n",
+       "91953       49.0  <p>I have a methodological question, and there...  35413.0   \n",
+       "91954       15.0  <p>I'm a beginner in statistics and I have to ...  55733.0   \n",
+       "91955        NaN  <p>I've personally been asking this question f...  44142.0   \n",
+       "91956       15.0  <p>Are there any formulae for the quantiles of...   1569.0   \n",
+       "91957       40.0  <p>Is Student's t test a Wald test?</p>\\n\\n<p>...  55738.0   \n",
+       "91958       12.0  <p>Given the biometric match scores, I am requ...  55383.0   \n",
+       "91959        NaN  <p>Theoretical insight, institutional knowledg...   7071.0   \n",
+       "91960        NaN  <p>I think I got a very simple answer.</p>\\n\\n...   2676.0   \n",
+       "91961       11.0  <p>I'm trying to find the most similar sample ...  52858.0   \n",
+       "91962        NaN  <blockquote>\\n  <p>Is there some approach to u...  28236.0   \n",
+       "91963       17.0  <p>Does any standard statistical software like...  55742.0   \n",
+       "91964       97.0  <p>Jon and Frank ordered 2 footlong sandwiches...  41961.0   \n",
+       "91965        NaN  <p>You need to multiply the probabilities with...  24808.0   \n",
+       "91966        NaN  <p>Line up the four sandwiches in a row where ...   6633.0   \n",
+       "91967       13.0  <p>im analyzing an article for my studies with...  55744.0   \n",
+       "91968       19.0  <p>I am trying to estimate the school effects ...  35801.0   \n",
+       "91969        NaN  <p>If prior to running the xtreg command you h...  48579.0   \n",
+       "91970        NaN  <p>Yes, the <a href=\"http://cran.r-project.org...  48579.0   \n",
+       "91971        NaN  <p>This grew too long for a comment, but I thi...    805.0   \n",
+       "91972        9.0  <p>Assume a classification problem where there...  49365.0   \n",
+       "91973        5.0  <p>My goal is to create a formula that can giv...  55746.0   \n",
+       "91974        NaN  <p>As a practical answer to the real questions...    805.0   \n",
+       "91975        NaN  <p>Decision trees are notoriously <strong>unst...   7250.0   \n",
+       "\n",
+       "          LasActivityDate                                              Title  \\\n",
+       "0     2010-09-15 21:08:26                      Eliciting priors from experts   \n",
+       "1     2012-11-12 09:21:54                                 What is normality?   \n",
+       "2     2013-05-27 14:48:36  What are some valuable Statistical Analysis op...   \n",
+       "3     2010-09-08 03:00:19  Assessing the significance of differences in d...   \n",
+       "4     2010-07-19 19:21:15                                               None   \n",
+       "5     2014-05-29 03:54:31  The Two Cultures: statistics vs. machine learn...   \n",
+       "6     2013-12-28 06:53:10             Locating freely available data samples   \n",
+       "7     2010-10-18 07:57:31  So how many staticians *does* it take to screw...   \n",
+       "8     2010-07-19 19:16:27                                               None   \n",
+       "9     2012-10-23 17:33:41  Under what conditions should Likert scales be ...   \n",
+       "10    2010-08-03 21:50:09              Multivariate Interpolation Approaches   \n",
+       "11    2010-07-19 19:18:41                                               None   \n",
+       "12    2010-07-19 19:18:56                                               None   \n",
+       "13    2010-07-19 19:19:03                                               None   \n",
+       "14    2010-07-19 19:19:46                                               None   \n",
+       "15    2010-07-19 20:43:02                                               None   \n",
+       "16    2012-01-22 23:34:51             How can I adapt ANOVA for binary data?   \n",
+       "17    2010-07-19 19:24:18                                               None   \n",
+       "18    2010-07-19 19:24:21                                               None   \n",
+       "19    2010-07-19 19:24:35                                               None   \n",
+       "20    2010-09-30 21:14:45                     Forecasting demographic census   \n",
+       "21    2014-06-05 02:06:32  Bayesian and frequentist reasoning in plain En...   \n",
+       "22    2010-07-20 08:52:27                      Finding the PDF given the CDF   \n",
+       "23    2010-07-19 19:26:13                                               None   \n",
+       "24    2014-08-13 20:29:48           Tools for modeling financial time series   \n",
+       "25    2013-07-30 10:19:04                      What is a standard deviation?   \n",
+       "26    2010-07-19 19:28:12                                               None   \n",
+       "27    2010-07-19 19:28:12                                               None   \n",
+       "28    2010-07-19 19:28:15                                               None   \n",
+       "29    2011-05-12 18:38:27       Testing random variate generation algorithms   \n",
+       "...                   ...                                                ...   \n",
+       "91946 2014-09-13 13:15:18                                               None   \n",
+       "91947 2014-09-13 16:25:32  Please help me interpret this goodness of fit ...   \n",
+       "91948 2014-09-13 15:26:01  Specifying negative costs (benefits) in rpart'...   \n",
+       "91949 2014-09-13 15:43:23               Sampling frame of a voluntary survey   \n",
+       "91950 2014-09-13 16:15:30  Is there a way to estimate the distribution fr...   \n",
+       "91951 2014-09-13 16:15:30                                               None   \n",
+       "91952 2014-09-13 16:25:32                                               None   \n",
+       "91953 2014-09-13 18:53:58  Adjust for everything you have in propensity s...   \n",
+       "91954 2014-09-13 20:45:45  How to interpret glmer results (variance, corr...   \n",
+       "91955 2014-09-13 17:07:54                                               None   \n",
+       "91956 2014-09-14 02:54:13  Quantiles of a compound gamma/negative binomia...   \n",
+       "91957 2014-09-13 18:06:50                   Is Student's t test a Wald test?   \n",
+       "91958 2014-09-13 18:36:36            Plotting of density estimates in matlab   \n",
+       "91959 2014-09-13 18:53:58                                               None   \n",
+       "91960 2014-09-13 19:37:20                                               None   \n",
+       "91961 2014-09-13 21:30:41          In search of a proper similarity function   \n",
+       "91962 2014-09-13 20:13:11                                               None   \n",
+       "91963 2014-09-13 23:18:30                     Missing data analysis software   \n",
+       "91964 2014-09-14 02:05:41  How to add odds? (or how I got the wrong sandw...   \n",
+       "91965 2014-09-13 21:01:39                                               None   \n",
+       "91966 2014-09-13 21:27:49                                               None   \n",
+       "91967 2014-09-13 21:39:30                                 Poisson regression   \n",
+       "91968 2014-09-13 23:15:00  Estimation of school effects using xtmixed (in...   \n",
+       "91969 2014-09-13 23:15:00                                               None   \n",
+       "91970 2014-09-13 23:18:30                                               None   \n",
+       "91971 2014-09-14 02:05:41                                               None   \n",
+       "91972 2014-09-14 02:09:23  Detecting a consistent pattern in a dataset vi...   \n",
+       "91973 2014-09-14 01:40:55  How to project video viewcount based on histor...   \n",
+       "91974 2014-09-14 02:54:13                                               None   \n",
+       "91975 2014-09-14 02:09:23                                               None   \n",
+       "\n",
+       "       ... AnswerCount  CommentCount  FavoriteCount  LastEditorUserId  \\\n",
+       "0      ...         5.0             1           14.0               NaN   \n",
+       "1      ...         7.0             1            8.0              88.0   \n",
+       "2      ...        19.0             4           36.0             183.0   \n",
+       "3      ...         5.0             2            2.0               NaN   \n",
+       "4      ...         NaN             3            NaN              23.0   \n",
+       "5      ...        15.0             5          137.0           22047.0   \n",
+       "6      ...        24.0             3           79.0             253.0   \n",
+       "7      ...         1.0             2            NaN             449.0   \n",
+       "8      ...         NaN             3            NaN               NaN   \n",
+       "9      ...         4.0             4           12.0             919.0   \n",
+       "10     ...         1.0             2            1.0              34.0   \n",
+       "11     ...         NaN             1            NaN               NaN   \n",
+       "12     ...         NaN             4            NaN               NaN   \n",
+       "13     ...         NaN             1            NaN               NaN   \n",
+       "14     ...         NaN             0            NaN               NaN   \n",
+       "15     ...         NaN             3            NaN               8.0   \n",
+       "16     ...         1.0             0            1.0            7972.0   \n",
+       "17     ...         NaN             1            NaN               NaN   \n",
+       "18     ...         NaN             0            NaN               NaN   \n",
+       "19     ...         NaN             2            NaN               NaN   \n",
+       "20     ...         1.0             1            1.0             930.0   \n",
+       "21     ...        15.0             1           67.0             930.0   \n",
+       "22     ...         2.0             1            2.0               NaN   \n",
+       "23     ...         NaN             0            NaN               NaN   \n",
+       "24     ...         7.0             4            5.0              69.0   \n",
+       "25     ...         8.0            14            7.0           22047.0   \n",
+       "26     ...         NaN             0            NaN               NaN   \n",
+       "27     ...         NaN             0            NaN               NaN   \n",
+       "28     ...         NaN             0            NaN               NaN   \n",
+       "29     ...         8.0             2            7.0             919.0   \n",
+       "...    ...         ...           ...            ...               ...   \n",
+       "91946  ...         NaN             0            NaN               NaN   \n",
+       "91947  ...         1.0             3            NaN           55564.0   \n",
+       "91948  ...         0.0             0            NaN               NaN   \n",
+       "91949  ...         0.0             0            NaN            7290.0   \n",
+       "91950  ...         1.0             0            NaN               NaN   \n",
+       "91951  ...         NaN             0            NaN               NaN   \n",
+       "91952  ...         NaN             0            NaN               NaN   \n",
+       "91953  ...         2.0             0            NaN               NaN   \n",
+       "91954  ...         0.0             0            NaN           55733.0   \n",
+       "91955  ...         NaN             0            NaN               NaN   \n",
+       "91956  ...         1.0             0            NaN               NaN   \n",
+       "91957  ...         0.0             4            NaN               NaN   \n",
+       "91958  ...         0.0             1            NaN               NaN   \n",
+       "91959  ...         NaN             0            NaN            7071.0   \n",
+       "91960  ...         NaN             0            NaN               NaN   \n",
+       "91961  ...         0.0             3            NaN           52858.0   \n",
+       "91962  ...         NaN             1            NaN               NaN   \n",
+       "91963  ...         1.0             0            1.0               NaN   \n",
+       "91964  ...         3.0             0            NaN             919.0   \n",
+       "91965  ...         NaN             0            NaN               NaN   \n",
+       "91966  ...         NaN             0            NaN               NaN   \n",
+       "91967  ...         0.0             2            NaN               NaN   \n",
+       "91968  ...         1.0             0            NaN           35801.0   \n",
+       "91969  ...         NaN             9            NaN               NaN   \n",
+       "91970  ...         NaN             0            NaN               NaN   \n",
+       "91971  ...         NaN             2            NaN             805.0   \n",
+       "91972  ...         1.0             0            NaN               NaN   \n",
+       "91973  ...         0.0             2            NaN            7290.0   \n",
+       "91974  ...         NaN             0            NaN             805.0   \n",
+       "91975  ...         NaN             0            NaN               NaN   \n",
+       "\n",
+       "             LastEditDate  CommunityOwnedDate  ParentId          ClosedDate  \\\n",
+       "0                     NaT                 NaT       NaN                 NaT   \n",
+       "1     2010-08-07 17:56:44                 NaT       NaN                 NaT   \n",
+       "2     2011-02-12 05:50:03 2010-07-19 19:13:28       NaN                 NaT   \n",
+       "3                     NaT                 NaT       NaN                 NaT   \n",
+       "4     2010-07-19 19:21:15 2010-07-19 19:14:43       3.0                 NaT   \n",
+       "5     2013-06-07 06:38:10 2010-08-09 13:05:50       NaN                 NaT   \n",
+       "6     2013-09-26 21:50:36 2010-07-20 20:50:48       NaN                 NaT   \n",
+       "7     2010-10-18 07:57:31                 NaT       NaN 2010-07-19 20:19:46   \n",
+       "8                     NaT 2010-07-19 19:16:27       3.0                 NaT   \n",
+       "9     2011-03-30 15:31:46                 NaT       NaN                 NaT   \n",
+       "10    2010-07-28 07:58:52                 NaT       NaN                 NaT   \n",
+       "11                    NaT 2011-08-12 20:29:33       7.0                 NaT   \n",
+       "12                    NaT                 NaT       6.0                 NaT   \n",
+       "13                    NaT 2010-07-19 19:19:03       3.0                 NaT   \n",
+       "14                    NaT                 NaT       1.0                 NaT   \n",
+       "15    2010-07-19 20:43:02 2010-07-19 19:22:31       3.0                 NaT   \n",
+       "16    2012-01-22 23:34:51                 NaT       NaN                 NaT   \n",
+       "17                    NaT 2011-08-12 20:31:32       7.0                 NaT   \n",
+       "18                    NaT 2011-08-12 20:29:45       7.0                 NaT   \n",
+       "19                    NaT                 NaT       2.0                 NaT   \n",
+       "20    2010-09-30 21:14:45                 NaT       NaN                 NaT   \n",
+       "21    2011-10-04 07:05:14                 NaT       NaN                 NaT   \n",
+       "22                    NaT                 NaT       NaN                 NaT   \n",
+       "23                    NaT 2010-07-19 19:26:13       3.0                 NaT   \n",
+       "24    2010-07-26 23:38:29 2010-07-26 23:38:29       NaN                 NaT   \n",
+       "25    2013-07-30 10:19:04                 NaT       NaN                 NaT   \n",
+       "26                    NaT 2011-08-12 20:29:55       7.0                 NaT   \n",
+       "27                    NaT 2010-07-19 19:28:12       3.0                 NaT   \n",
+       "28                    NaT                 NaT      17.0                 NaT   \n",
+       "29    2010-08-25 14:12:54                 NaT       NaN                 NaT   \n",
+       "...                   ...                 ...       ...                 ...   \n",
+       "91946                 NaT                 NaT  113980.0                 NaT   \n",
+       "91947 2014-09-13 15:41:36                 NaT       NaN                 NaT   \n",
+       "91948                 NaT                 NaT       NaN                 NaT   \n",
+       "91949 2014-09-13 15:43:23                 NaT       NaN                 NaT   \n",
+       "91950                 NaT                 NaT       NaN                 NaT   \n",
+       "91951                 NaT                 NaT  115352.0                 NaT   \n",
+       "91952                 NaT                 NaT  115348.0                 NaT   \n",
+       "91953                 NaT                 NaT       NaN                 NaT   \n",
+       "91954 2014-09-13 20:45:45                 NaT       NaN                 NaT   \n",
+       "91955                 NaT                 NaT  115355.0                 NaT   \n",
+       "91956                 NaT                 NaT       NaN                 NaT   \n",
+       "91957                 NaT                 NaT       NaN                 NaT   \n",
+       "91958                 NaT                 NaT       NaN                 NaT   \n",
+       "91959 2014-09-13 18:53:58                 NaT  115355.0                 NaT   \n",
+       "91960                 NaT                 NaT  115279.0                 NaT   \n",
+       "91961 2014-09-13 21:30:41                 NaT       NaN                 NaT   \n",
+       "91962                 NaT                 NaT  108430.0                 NaT   \n",
+       "91963                 NaT                 NaT       NaN                 NaT   \n",
+       "91964 2014-09-13 21:11:36                 NaT       NaN                 NaT   \n",
+       "91965                 NaT                 NaT  115367.0                 NaT   \n",
+       "91966                 NaT                 NaT  115367.0                 NaT   \n",
+       "91967                 NaT                 NaT       NaN                 NaT   \n",
+       "91968 2014-09-13 22:51:35                 NaT       NaN                 NaT   \n",
+       "91969                 NaT                 NaT  115371.0                 NaT   \n",
+       "91970                 NaT                 NaT  115366.0                 NaT   \n",
+       "91971 2014-09-14 02:05:41                 NaT  115367.0                 NaT   \n",
+       "91972                 NaT                 NaT       NaN                 NaT   \n",
+       "91973 2014-09-14 01:40:55                 NaT       NaN                 NaT   \n",
+       "91974 2014-09-14 02:54:13                 NaT  115358.0                 NaT   \n",
+       "91975                 NaT                 NaT  115375.0                 NaT   \n",
+       "\n",
+       "      OwnerDisplayName LastEditorDisplayName  \n",
+       "0                 None                  None  \n",
+       "1                 None                  None  \n",
+       "2                 None                  None  \n",
+       "3                 None                  None  \n",
+       "4                 None                  None  \n",
+       "5                 None                  None  \n",
+       "6                 None                  None  \n",
+       "7                 None                  None  \n",
+       "8                 None                  None  \n",
+       "9                 None                  None  \n",
+       "10                None                  None  \n",
+       "11                None                  None  \n",
+       "12                None                  None  \n",
+       "13                None                  None  \n",
+       "14                None                  None  \n",
+       "15                None                  None  \n",
+       "16              user28                  None  \n",
+       "17                None                  None  \n",
+       "18                None                  None  \n",
+       "19                None                  None  \n",
+       "20                None                  None  \n",
+       "21                None                  None  \n",
+       "22                None                  None  \n",
+       "23                None                  None  \n",
+       "24                None                  None  \n",
+       "25                None                  None  \n",
+       "26                None                  None  \n",
+       "27              user28                  None  \n",
+       "28                None                  None  \n",
+       "29                None                  None  \n",
+       "...                ...                   ...  \n",
+       "91946             None                  None  \n",
+       "91947             None                  None  \n",
+       "91948             None                  None  \n",
+       "91949             None                  None  \n",
+       "91950             None                  None  \n",
+       "91951             None                  None  \n",
+       "91952             None                  None  \n",
+       "91953             None                  None  \n",
+       "91954             None                  None  \n",
+       "91955             None                  None  \n",
+       "91956             None                  None  \n",
+       "91957             None                  None  \n",
+       "91958             None                  None  \n",
+       "91959             None                  None  \n",
+       "91960             None                  None  \n",
+       "91961             None                  None  \n",
+       "91962             None                  None  \n",
+       "91963             None                  None  \n",
+       "91964             None                  None  \n",
+       "91965             None                  None  \n",
+       "91966             None                  None  \n",
+       "91967             None                  None  \n",
+       "91968             None                  None  \n",
+       "91969             None                  None  \n",
+       "91970             None                  None  \n",
+       "91971             None                  None  \n",
+       "91972             None                  None  \n",
+       "91973             None                  None  \n",
+       "91974             None                  None  \n",
+       "91975             None                  None  \n",
+       "\n",
+       "[91976 rows x 21 columns]"
+      ]
+     },
+     "execution_count": 41,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "TablePosts.rename(columns={'Id':'postId', 'OwnerUserId':'userId'},inplace=True)\n",
+    "TablePosts"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -112,7 +2802,9 @@
    "execution_count": null,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "UsersColumns = UsersTable"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -196,7 +2888,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.5"
+   "version": "3.7.3"
   }
  },
  "nbformat": 4,
diff --git a/your-code/main.ipynb b/your-code/main.ipynb
index 31724c5..ad634e3 100644
--- a/your-code/main.ipynb
+++ b/your-code/main.ipynb
@@ -9,10 +9,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "import pandas\n",
+    "import numpy"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -23,10 +26,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "import pymysql\n",
+    "from sqlalchemy import create_engine\n"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -37,10 +43,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 22,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "conexion = create_engine(\"mysql+pymysql://guest:relational@relational.fit.cvut.cz\")"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -51,10 +59,175 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 28,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>Id</th>\n",
+       "      <th>Reputation</th>\n",
+       "      <th>CreationDate</th>\n",
+       "      <th>DisplayName</th>\n",
+       "      <th>LastAccessDate</th>\n",
+       "      <th>WebsiteUrl</th>\n",
+       "      <th>Location</th>\n",
+       "      <th>AboutMe</th>\n",
+       "      <th>Views</th>\n",
+       "      <th>UpVotes</th>\n",
+       "      <th>DownVotes</th>\n",
+       "      <th>AccountId</th>\n",
+       "      <th>Age</th>\n",
+       "      <th>ProfileImageUrl</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>-1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>2010-07-19 06:55:26</td>\n",
+       "      <td>Community</td>\n",
+       "      <td>2010-07-19 06:55:26</td>\n",
+       "      <td>http://meta.stackexchange.com/</td>\n",
+       "      <td>on the server farm</td>\n",
+       "      <td>&lt;p&gt;Hi, I'm not really a person.&lt;/p&gt;\\n\\n&lt;p&gt;I'm ...</td>\n",
+       "      <td>0</td>\n",
+       "      <td>5007</td>\n",
+       "      <td>1920</td>\n",
+       "      <td>-1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>2</td>\n",
+       "      <td>101</td>\n",
+       "      <td>2010-07-19 14:01:36</td>\n",
+       "      <td>Geoff Dalgas</td>\n",
+       "      <td>2013-11-12 22:07:23</td>\n",
+       "      <td>http://stackoverflow.com</td>\n",
+       "      <td>Corvallis, OR</td>\n",
+       "      <td>&lt;p&gt;Developer on the StackOverflow team.  Find ...</td>\n",
+       "      <td>25</td>\n",
+       "      <td>3</td>\n",
+       "      <td>0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>37.0</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>3</td>\n",
+       "      <td>101</td>\n",
+       "      <td>2010-07-19 15:34:50</td>\n",
+       "      <td>Jarrod Dixon</td>\n",
+       "      <td>2014-08-08 06:42:58</td>\n",
+       "      <td>http://stackoverflow.com</td>\n",
+       "      <td>New York, NY</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://blog.stackoverflow.com/2009...</td>\n",
+       "      <td>22</td>\n",
+       "      <td>19</td>\n",
+       "      <td>0</td>\n",
+       "      <td>3</td>\n",
+       "      <td>35.0</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>4</td>\n",
+       "      <td>101</td>\n",
+       "      <td>2010-07-19 19:03:27</td>\n",
+       "      <td>Emmett</td>\n",
+       "      <td>2014-01-02 09:31:02</td>\n",
+       "      <td>http://minesweeperonline.com</td>\n",
+       "      <td>San Francisco, CA</td>\n",
+       "      <td>&lt;p&gt;currently at a startup in SF&lt;/p&gt;\\n\\n&lt;p&gt;form...</td>\n",
+       "      <td>11</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1998</td>\n",
+       "      <td>28.0</td>\n",
+       "      <td>http://i.stack.imgur.com/d1oHX.jpg</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>5</td>\n",
+       "      <td>6792</td>\n",
+       "      <td>2010-07-19 19:03:57</td>\n",
+       "      <td>Shane</td>\n",
+       "      <td>2014-08-13 00:23:47</td>\n",
+       "      <td>http://www.statalgo.com</td>\n",
+       "      <td>New York, NY</td>\n",
+       "      <td>&lt;p&gt;Quantitative researcher focusing on statist...</td>\n",
+       "      <td>1145</td>\n",
+       "      <td>662</td>\n",
+       "      <td>5</td>\n",
+       "      <td>54503</td>\n",
+       "      <td>35.0</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "   Id  Reputation        CreationDate   DisplayName      LastAccessDate  \\\n",
+       "0  -1           1 2010-07-19 06:55:26     Community 2010-07-19 06:55:26   \n",
+       "1   2         101 2010-07-19 14:01:36  Geoff Dalgas 2013-11-12 22:07:23   \n",
+       "2   3         101 2010-07-19 15:34:50  Jarrod Dixon 2014-08-08 06:42:58   \n",
+       "3   4         101 2010-07-19 19:03:27        Emmett 2014-01-02 09:31:02   \n",
+       "4   5        6792 2010-07-19 19:03:57         Shane 2014-08-13 00:23:47   \n",
+       "\n",
+       "                       WebsiteUrl            Location  \\\n",
+       "0  http://meta.stackexchange.com/  on the server farm   \n",
+       "1        http://stackoverflow.com       Corvallis, OR   \n",
+       "2        http://stackoverflow.com        New York, NY   \n",
+       "3    http://minesweeperonline.com   San Francisco, CA   \n",
+       "4         http://www.statalgo.com        New York, NY   \n",
+       "\n",
+       "                                             AboutMe  Views  UpVotes  \\\n",
+       "0  <p>Hi, I'm not really a person.</p>\\n\\n<p>I'm ...      0     5007   \n",
+       "1  <p>Developer on the StackOverflow team.  Find ...     25        3   \n",
+       "2  <p><a href=\"http://blog.stackoverflow.com/2009...     22       19   \n",
+       "3  <p>currently at a startup in SF</p>\\n\\n<p>form...     11        0   \n",
+       "4  <p>Quantitative researcher focusing on statist...   1145      662   \n",
+       "\n",
+       "   DownVotes  AccountId   Age                     ProfileImageUrl  \n",
+       "0       1920         -1   NaN                                None  \n",
+       "1          0          2  37.0                                None  \n",
+       "2          0          3  35.0                                None  \n",
+       "3          0       1998  28.0  http://i.stack.imgur.com/d1oHX.jpg  \n",
+       "4          5      54503  35.0                                None  "
+      ]
+     },
+     "execution_count": 28,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "UsersTable = pandas.read_sql_query('SELECT * FROM stats.users;', conexion)\n",
+    "UsersTable.head()\n"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -65,10 +238,399 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 35,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "       userId  Reputation        CreationDate          DisplayName  \\\n",
+      "0          -1           1 2010-07-19 06:55:26            Community   \n",
+      "1           2         101 2010-07-19 14:01:36         Geoff Dalgas   \n",
+      "2           3         101 2010-07-19 15:34:50         Jarrod Dixon   \n",
+      "3           4         101 2010-07-19 19:03:27               Emmett   \n",
+      "4           5        6792 2010-07-19 19:03:57                Shane   \n",
+      "5           6         457 2010-07-19 19:04:07               Harlan   \n",
+      "6           7         429 2010-07-19 19:04:37                Vince   \n",
+      "7           8        6764 2010-07-19 19:04:52          csgillespie   \n",
+      "8          10         121 2010-07-19 19:05:40               Pierre   \n",
+      "9          11         136 2010-07-19 19:06:02             wahalulu   \n",
+      "10         12         101 2010-07-19 19:06:34                  Jin   \n",
+      "11         13         817 2010-07-19 19:06:49              Sharpie   \n",
+      "12         15          11 2010-07-19 19:07:32        hannes.koller   \n",
+      "13         16         101 2010-07-19 19:08:13            slashnick   \n",
+      "14         17         345 2010-07-19 19:08:28               Random   \n",
+      "15         18         128 2010-07-19 19:08:29               grokus   \n",
+      "16         19         101 2010-07-19 19:08:45          Noah Snyder   \n",
+      "17         21         101 2010-07-19 19:08:56   Waleed Al-Balooshi   \n",
+      "18         22         591 2010-07-19 19:09:00                radek   \n",
+      "19         23         308 2010-07-19 19:09:16          Jay Stevens   \n",
+      "20         24         344 2010-07-19 19:09:32               A Lion   \n",
+      "21         25        4968 2010-07-19 19:09:32      Harvey Motulsky   \n",
+      "22         26        3150 2010-07-19 19:09:39                  JMS   \n",
+      "23         27         101 2010-07-19 19:09:41               balpha   \n",
+      "24         29        2250 2010-07-19 19:09:42              JD Long   \n",
+      "25         30        2185 2010-07-19 19:10:15                gappy   \n",
+      "26         33         221 2010-07-19 19:11:08           James Roth   \n",
+      "27         34         185 2010-07-19 19:11:11  Christopher D. Long   \n",
+      "28         35         101 2010-07-19 19:11:38                adi92   \n",
+      "29         36        1570 2010-07-19 19:11:52       Stephen Turner   \n",
+      "...       ...         ...                 ...                  ...   \n",
+      "40295   55718           6 2014-09-13 07:12:49                Amena   \n",
+      "40296   55719           1 2014-09-13 07:19:09   OGUNNUSI OLUWATOBI   \n",
+      "40297   55720           1 2014-09-13 08:00:08              Rebecca   \n",
+      "40298   55721         101 2014-09-13 08:15:38           Lotte Laat   \n",
+      "40299   55722           1 2014-09-13 08:32:22            WojciechF   \n",
+      "40300   55723           1 2014-09-13 09:29:38  Davidson Salvia Jr.   \n",
+      "40301   55724          16 2014-09-13 09:50:11            ouroboros   \n",
+      "40302   55725           1 2014-09-13 09:53:01         Jatin Baveja   \n",
+      "40303   55726           1 2014-09-13 09:54:27     SuPakarn Junfang   \n",
+      "40304   55727           1 2014-09-13 10:03:06         biggvsdiccvs   \n",
+      "40305   55728           1 2014-09-13 10:48:35            user56299   \n",
+      "40306   55729          16 2014-09-13 11:04:54        Achim Zeileis   \n",
+      "40307   55730           1 2014-09-13 12:01:38           quants_mum   \n",
+      "40308   55731           1 2014-09-13 15:23:34             Kiran BM   \n",
+      "40309   55732         101 2014-09-13 15:31:37     Szilárd Pfeiffer   \n",
+      "40310   55733           6 2014-09-13 15:51:18                  Pax   \n",
+      "40311   55734           1 2014-09-13 15:56:55                jalen   \n",
+      "40312   55735           1 2014-09-13 16:21:29               Mukund   \n",
+      "40313   55736           1 2014-09-13 16:29:11                liszt   \n",
+      "40314   55737           1 2014-09-13 17:53:27             oolusola   \n",
+      "40315   55738          11 2014-09-13 18:06:50                guest   \n",
+      "40316   55739           1 2014-09-13 19:06:17              kpivert   \n",
+      "40317   55740           1 2014-09-13 19:12:19            Nikkolasg   \n",
+      "40318   55741         101 2014-09-13 20:19:48             Jutschge   \n",
+      "40319   55742           6 2014-09-13 20:36:55          Sayan Ghosh   \n",
+      "40320   55743           1 2014-09-13 21:03:50            AussieMeg   \n",
+      "40321   55744           6 2014-09-13 21:39:30            Mia Maria   \n",
+      "40322   55745         101 2014-09-13 23:45:27         tronbabylove   \n",
+      "40323   55746         106 2014-09-14 00:29:41                  GPP   \n",
+      "40324   55747           1 2014-09-14 01:01:44       Shivam Agrawal   \n",
+      "\n",
+      "           LastAccessDate                                    WebsiteUrl  \\\n",
+      "0     2010-07-19 06:55:26                http://meta.stackexchange.com/   \n",
+      "1     2013-11-12 22:07:23                      http://stackoverflow.com   \n",
+      "2     2014-08-08 06:42:58                      http://stackoverflow.com   \n",
+      "3     2014-01-02 09:31:02                  http://minesweeperonline.com   \n",
+      "4     2014-08-13 00:23:47                       http://www.statalgo.com   \n",
+      "5     2014-08-07 19:49:44                 http://www.harlan.harris.name   \n",
+      "6     2014-09-10 21:14:12             http://bioinformatics.ucdavis.edu   \n",
+      "7     2014-09-09 21:15:08              http://www.mas.ncl.ac.uk/~ncsg3/   \n",
+      "8     2014-07-28 18:15:02               http://plindenbaum.blogspot.com   \n",
+      "9     2014-07-23 21:28:18       http://www.linkedin.com/in/marckvaisman   \n",
+      "10    2014-09-09 20:26:03                           http://www.8164.org   \n",
+      "11    2014-08-14 17:28:14                     http://www.sharpsteen.net   \n",
+      "12    2010-08-24 14:23:18                         http://soma.denkt.org   \n",
+      "13    2010-08-19 20:40:59                                          None   \n",
+      "14    2010-09-10 07:34:36                                          None   \n",
+      "15    2012-08-09 15:02:00                          http://wikipedia.org   \n",
+      "16    2012-06-17 15:53:43                http://sbseminar.wordpress.com   \n",
+      "17    2011-09-26 02:28:45                                          None   \n",
+      "18    2014-09-11 15:21:01                                          None   \n",
+      "19    2014-08-11 19:51:32               http://www.centerlinescores.com   \n",
+      "20    2011-12-06 04:21:56                                          None   \n",
+      "21    2014-09-13 21:51:42                       http://www.graphpad.com   \n",
+      "22    2014-09-13 04:03:25                                          None   \n",
+      "23    2014-04-14 14:57:17                             http://balpha.de/   \n",
+      "24    2014-08-11 19:14:03                http://cerebralmastication.com   \n",
+      "25    2014-08-27 20:06:28              http://www.twitter.com/gappy3000   \n",
+      "26    2014-09-08 21:15:20                                          None   \n",
+      "27    2014-09-13 00:02:35         http://angrystatistician.blogspot.com   \n",
+      "28    2014-08-13 06:05:38  http://www.contrib.andrew.cmu.edu/~amukherj/   \n",
+      "29    2014-08-29 15:17:07      http://gettinggeneticsdone.blogspot.com/   \n",
+      "...                   ...                                           ...   \n",
+      "40295 2014-09-13 07:12:49                                          None   \n",
+      "40296 2014-09-13 08:03:19                                          None   \n",
+      "40297 2014-09-13 08:00:08                                          None   \n",
+      "40298 2014-09-13 08:15:38                                          None   \n",
+      "40299 2014-09-13 08:32:22             http://about.me/wojciechfrancuzik   \n",
+      "40300 2014-09-13 09:29:38                                          None   \n",
+      "40301 2014-09-13 10:05:17                                          None   \n",
+      "40302 2014-09-13 15:25:42                                          None   \n",
+      "40303 2014-09-13 13:10:43                                          None   \n",
+      "40304 2014-09-13 10:03:06                                          None   \n",
+      "40305 2014-09-13 10:48:35                                          None   \n",
+      "40306 2014-09-13 12:15:21                                          None   \n",
+      "40307 2014-09-13 12:01:38                                          None   \n",
+      "40308 2014-09-13 20:51:55                                          None   \n",
+      "40309 2014-09-13 15:31:37                 http://www.pfeifferszilard.hu   \n",
+      "40310 2014-09-13 23:57:22                                          None   \n",
+      "40311 2014-09-13 15:56:55                                          None   \n",
+      "40312 2014-09-13 16:21:29                                          None   \n",
+      "40313 2014-09-13 16:29:11                                          None   \n",
+      "40314 2014-09-13 17:53:27                                          None   \n",
+      "40315 2014-09-14 01:34:01                                          None   \n",
+      "40316 2014-09-13 19:06:17                                          None   \n",
+      "40317 2014-09-13 19:46:29                                          None   \n",
+      "40318 2014-09-13 20:19:48                                          None   \n",
+      "40319 2014-09-13 22:04:00                                          None   \n",
+      "40320 2014-09-13 21:18:52                                          None   \n",
+      "40321 2014-09-13 21:39:30                                          None   \n",
+      "40322 2014-09-13 23:45:27                                          None   \n",
+      "40323 2014-09-14 02:05:17                                          None   \n",
+      "40324 2014-09-14 01:19:04                                          None   \n",
+      "\n",
+      "                        Location  \\\n",
+      "0             on the server farm   \n",
+      "1                  Corvallis, OR   \n",
+      "2                   New York, NY   \n",
+      "3              San Francisco, CA   \n",
+      "4                   New York, NY   \n",
+      "5           District of Columbia   \n",
+      "6                      Davis, CA   \n",
+      "7      Newcastle, United Kingdom   \n",
+      "8                         France   \n",
+      "9                 Washington, DC   \n",
+      "10                   Raleigh, NC   \n",
+      "11                 United States   \n",
+      "12               Vienna, Austria   \n",
+      "13        London, United Kingdom   \n",
+      "14                          None   \n",
+      "15                 United States   \n",
+      "16                  New York, NY   \n",
+      "17                      Michigan   \n",
+      "18            Berne, Switzerland   \n",
+      "19                          None   \n",
+      "20                          None   \n",
+      "21               Santa Monica CA   \n",
+      "22                          None   \n",
+      "23               Berlin, Germany   \n",
+      "24                   Chicago, IL   \n",
+      "25                  New York, NY   \n",
+      "26                          None   \n",
+      "27                Versailles, KY   \n",
+      "28                Pittsburgh, PA   \n",
+      "29                 Nashville, TN   \n",
+      "...                          ...   \n",
+      "40295                       None   \n",
+      "40296                       None   \n",
+      "40297                       None   \n",
+      "40298       Tilburg, Netherlands   \n",
+      "40299                       None   \n",
+      "40300                       None   \n",
+      "40301                       None   \n",
+      "40302                       None   \n",
+      "40303                       None   \n",
+      "40304                       None   \n",
+      "40305                       None   \n",
+      "40306                       None   \n",
+      "40307                       None   \n",
+      "40308                       None   \n",
+      "40309                    Hungary   \n",
+      "40310                       None   \n",
+      "40311                       None   \n",
+      "40312                       None   \n",
+      "40313                       None   \n",
+      "40314                       None   \n",
+      "40315                       None   \n",
+      "40316                       None   \n",
+      "40317                       None   \n",
+      "40318                Switzerland   \n",
+      "40319                       None   \n",
+      "40320                       None   \n",
+      "40321                       None   \n",
+      "40322              United States   \n",
+      "40323                       None   \n",
+      "40324                      India   \n",
+      "\n",
+      "                                                 AboutMe  Views  UpVotes  \\\n",
+      "0      <p>Hi, I'm not really a person.</p>\\n\\n<p>I'm ...      0     5007   \n",
+      "1      <p>Developer on the StackOverflow team.  Find ...     25        3   \n",
+      "2      <p><a href=\"http://blog.stackoverflow.com/2009...     22       19   \n",
+      "3      <p>currently at a startup in SF</p>\\n\\n<p>form...     11        0   \n",
+      "4      <p>Quantitative researcher focusing on statist...   1145      662   \n",
+      "5      <ul>\\n<li>PhD in CS/AI/Machine Learning/Cognit...    114       47   \n",
+      "6      I'm a recent graduate of UC Davis in Economics...     56       20   \n",
+      "7      <p>I'm a statistics lecturer at Newcastle Univ...   1089      604   \n",
+      "8      Bioinformatician\\\\nVirology\\\\nGenetics\\\\nBiolo...     20        2   \n",
+      "9      <p>data_stuff &lt;- paste('data', c('scientist...     10       10   \n",
+      "10     <p>I design stuff for Stack Exchange. Also a p...     10        5   \n",
+      "11     Undergraduate studying Environmental Engineeri...    178       44   \n",
+      "12                                                  None      8        0   \n",
+      "13                                                  None      4        7   \n",
+      "14                                                  None     14       13   \n",
+      "15                           <p>Software engineer.</p>\\n      8       16   \n",
+      "16     <p>I'm an assistant professor in mathematics a...     13        2   \n",
+      "17                                                  None      6        0   \n",
+      "18     <p>Researcher in spatial epidemiology &amp; GI...     90      693   \n",
+      "19     <p>I design and build Grant and Program manage...     52       34   \n",
+      "20                                                  None     48       36   \n",
+      "21     <p>I am the founder and CEO of <a href=\"http:/...    641      328   \n",
+      "22                                                  None    257      138   \n",
+      "23     <p>My name is Benjamin Dumke-von der Ehe. I am...     10        2   \n",
+      "24     I'm a data guy not a programmer. But sometimes...    318       28   \n",
+      "25     <p>Interested primarily in econometric analysi...    312       40   \n",
+      "26                                                  None     11        2   \n",
+      "27     <p>Consulting analyst for the San Diego Padres...     27       23   \n",
+      "28                                                  None      4        9   \n",
+      "29     <p>I'm finishing up my Ph.D. in Human Genetics...    173       26   \n",
+      "...                                                  ...    ...      ...   \n",
+      "40295                                               None      0        0   \n",
+      "40296                                               None      1        0   \n",
+      "40297                                               None      0        0   \n",
+      "40298  <p>I like maths, swimming, food and penguins!<...      0        1   \n",
+      "40299  <p>MD mesmerized by data science, TeX user, R ...      0        0   \n",
+      "40300                                               None      0        0   \n",
+      "40301  <p>I'm a self-taught programmer and linux powe...      1        0   \n",
+      "40302                                               None      0        0   \n",
+      "40303                                               None      0        0   \n",
+      "40304                                               None      0        0   \n",
+      "40305                                               None      0        0   \n",
+      "40306                                               None      1        0   \n",
+      "40307                                               None      0        0   \n",
+      "40308                                               None      0        0   \n",
+      "40309                                               None      0        0   \n",
+      "40310                                               None      1        0   \n",
+      "40311                                               None      0        0   \n",
+      "40312                                               None      0        0   \n",
+      "40313                                               None      0        0   \n",
+      "40314                                               None      0        0   \n",
+      "40315                                               None      0        0   \n",
+      "40316                                               None      0        0   \n",
+      "40317  <p>Be the change that you want to see in the w...      0        0   \n",
+      "40318                                               None      0        1   \n",
+      "40319                                               None      0        0   \n",
+      "40320                                               None      0        0   \n",
+      "40321                                               None      1        0   \n",
+      "40322                                               None      0        0   \n",
+      "40323  <p>Stats noobie, product, marketing &amp; medi...      1        0   \n",
+      "40324                         <p>Maths Enthusiast </p>\\n      0        0   \n",
+      "\n",
+      "       DownVotes  AccountId   Age  \\\n",
+      "0           1920         -1   NaN   \n",
+      "1              0          2  37.0   \n",
+      "2              0          3  35.0   \n",
+      "3              0       1998  28.0   \n",
+      "4              5      54503  35.0   \n",
+      "5              0      46050  41.0   \n",
+      "6              0      49514  28.0   \n",
+      "7             25      70002  36.0   \n",
+      "8              0      23234  44.0   \n",
+      "9              0      47893  40.0   \n",
+      "10             0      21721  38.0   \n",
+      "11             1      46029  28.0   \n",
+      "12             0     189902  35.0   \n",
+      "13             0      10996  31.0   \n",
+      "14             1     509454   NaN   \n",
+      "15             0      69872  44.0   \n",
+      "16             0     501919  34.0   \n",
+      "17             0      40640  33.0   \n",
+      "18             6     124416   NaN   \n",
+      "19             1      21565  46.0   \n",
+      "20             1      85249   NaN   \n",
+      "21            23     504968  62.0   \n",
+      "22             7     134002   NaN   \n",
+      "23             0      40051  34.0   \n",
+      "24             1      17035  42.0   \n",
+      "25             3      48399   NaN   \n",
+      "26             0     137440   NaN   \n",
+      "27             0     509455   NaN   \n",
+      "28             0      13043  26.0   \n",
+      "29             1     330276  31.0   \n",
+      "...          ...        ...   ...   \n",
+      "40295          0    5024818   NaN   \n",
+      "40296          0    5024833   NaN   \n",
+      "40297          0    5024897   NaN   \n",
+      "40298          0    1402294  23.0   \n",
+      "40299          0    3943551   NaN   \n",
+      "40300          0    5025125   NaN   \n",
+      "40301          0    3620179   NaN   \n",
+      "40302          0    5025186   NaN   \n",
+      "40303          0    5025192   NaN   \n",
+      "40304          0    3293263   NaN   \n",
+      "40305          0    3808774   NaN   \n",
+      "40306          0    5025362   NaN   \n",
+      "40307          0    5025477   NaN   \n",
+      "40308          0    5025991   NaN   \n",
+      "40309          0    1447761  36.0   \n",
+      "40310          0    5026082   NaN   \n",
+      "40311          0    5026094   NaN   \n",
+      "40312          0    3335078   NaN   \n",
+      "40313          0     510194   NaN   \n",
+      "40314          0    5026427   NaN   \n",
+      "40315          0    5026468   NaN   \n",
+      "40316          0    5026613   NaN   \n",
+      "40317          0    1239737   NaN   \n",
+      "40318          0    3142440   NaN   \n",
+      "40319          0    5026843   NaN   \n",
+      "40320          0    5026902   NaN   \n",
+      "40321          0    5026998   NaN   \n",
+      "40322          0     481766   NaN   \n",
+      "40323          0     976289   NaN   \n",
+      "40324          0    5027354   NaN   \n",
+      "\n",
+      "                                         ProfileImageUrl  \n",
+      "0                                                   None  \n",
+      "1                                                   None  \n",
+      "2                                                   None  \n",
+      "3                     http://i.stack.imgur.com/d1oHX.jpg  \n",
+      "4                                                   None  \n",
+      "5                                                   None  \n",
+      "6                                                   None  \n",
+      "7                                                   None  \n",
+      "8                                                   None  \n",
+      "9                                                   None  \n",
+      "10                                                  None  \n",
+      "11                                                  None  \n",
+      "12                                                  None  \n",
+      "13                                                  None  \n",
+      "14                                                  None  \n",
+      "15                                                  None  \n",
+      "16                                                  None  \n",
+      "17                                                  None  \n",
+      "18                                                  None  \n",
+      "19                                                  None  \n",
+      "20                                                  None  \n",
+      "21                                                  None  \n",
+      "22                                                  None  \n",
+      "23                                                  None  \n",
+      "24                                                  None  \n",
+      "25                                                  None  \n",
+      "26                                                  None  \n",
+      "27                    http://i.stack.imgur.com/km1pr.jpg  \n",
+      "28                                                  None  \n",
+      "29                                                  None  \n",
+      "...                                                  ...  \n",
+      "40295                                               None  \n",
+      "40296                                               None  \n",
+      "40297  https://www.gravatar.com/avatar/2bc72d263cc5a8...  \n",
+      "40298  https://www.gravatar.com/avatar/a52832f3202953...  \n",
+      "40299  https://www.gravatar.com/avatar/285ba1e160c296...  \n",
+      "40300  http://graph.facebook.com/100000041001887/pict...  \n",
+      "40301  https://www.gravatar.com/avatar/1f8dbbc900087e...  \n",
+      "40302  https://lh3.googleusercontent.com/-8iERz9S6Zr8...  \n",
+      "40303  https://lh6.googleusercontent.com/--7hwjXqt-Zs...  \n",
+      "40304  https://www.gravatar.com/avatar/c9e31787de1366...  \n",
+      "40305                                               None  \n",
+      "40306                                               None  \n",
+      "40307                                               None  \n",
+      "40308                                               None  \n",
+      "40309  https://www.gravatar.com/avatar/70c18b82b058c1...  \n",
+      "40310  https://www.gravatar.com/avatar/d9b1e7660eb8ed...  \n",
+      "40311                                               None  \n",
+      "40312  https://www.gravatar.com/avatar/072b4df5e16f4e...  \n",
+      "40313       http://i.stack.imgur.com/AvRzI.jpg?s=128&g=1  \n",
+      "40314                                               None  \n",
+      "40315                                               None  \n",
+      "40316  https://www.gravatar.com/avatar/93313f90fbaf1e...  \n",
+      "40317  https://www.gravatar.com/avatar/cbae78493ed218...  \n",
+      "40318  https://www.gravatar.com/avatar/89f8e6f01faafa...  \n",
+      "40319                                               None  \n",
+      "40320  http://graph.facebook.com/665821703/picture?ty...  \n",
+      "40321                                               None  \n",
+      "40322  https://www.gravatar.com/avatar/faa7a3fdbd8308...  \n",
+      "40323  https://www.gravatar.com/avatar/6d9e9fa6b783a3...  \n",
+      "40324  https://lh4.googleusercontent.com/-ZsXhwVaFmiY...  \n",
+      "\n",
+      "[40325 rows x 14 columns]\n"
+     ]
+    }
+   ],
+   "source": [
+    "UsersTable.rename(columns={'Id':'userId'},inplace=True)\n",
+    "print(UsersTable)\n"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -79,10 +641,234 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 36,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
+       "    }\n",
+       "\n",
+       "    .dataframe thead th {\n",
+       "        text-align: right;\n",
+       "    }\n",
+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>Id</th>\n",
+       "      <th>PostTypeId</th>\n",
+       "      <th>AcceptedAnswerId</th>\n",
+       "      <th>CreaionDate</th>\n",
+       "      <th>Score</th>\n",
+       "      <th>ViewCount</th>\n",
+       "      <th>Body</th>\n",
+       "      <th>OwnerUserId</th>\n",
+       "      <th>LasActivityDate</th>\n",
+       "      <th>Title</th>\n",
+       "      <th>...</th>\n",
+       "      <th>AnswerCount</th>\n",
+       "      <th>CommentCount</th>\n",
+       "      <th>FavoriteCount</th>\n",
+       "      <th>LastEditorUserId</th>\n",
+       "      <th>LastEditDate</th>\n",
+       "      <th>CommunityOwnedDate</th>\n",
+       "      <th>ParentId</th>\n",
+       "      <th>ClosedDate</th>\n",
+       "      <th>OwnerDisplayName</th>\n",
+       "      <th>LastEditorDisplayName</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>2010-07-19 19:12:12</td>\n",
+       "      <td>23</td>\n",
+       "      <td>1278.0</td>\n",
+       "      <td>&lt;p&gt;How should I elicit prior distributions fro...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2010-09-15 21:08:26</td>\n",
+       "      <td>Eliciting priors from experts</td>\n",
+       "      <td>...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>14.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>2</td>\n",
+       "      <td>1</td>\n",
+       "      <td>59.0</td>\n",
+       "      <td>2010-07-19 19:12:57</td>\n",
+       "      <td>22</td>\n",
+       "      <td>8198.0</td>\n",
+       "      <td>&lt;p&gt;In many different statistical methods there...</td>\n",
+       "      <td>24.0</td>\n",
+       "      <td>2012-11-12 09:21:54</td>\n",
+       "      <td>What is normality?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>88.0</td>\n",
+       "      <td>2010-08-07 17:56:44</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>3</td>\n",
+       "      <td>1</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2010-07-19 19:13:28</td>\n",
+       "      <td>54</td>\n",
+       "      <td>3613.0</td>\n",
+       "      <td>&lt;p&gt;What are some valuable Statistical Analysis...</td>\n",
+       "      <td>18.0</td>\n",
+       "      <td>2013-05-27 14:48:36</td>\n",
+       "      <td>What are some valuable Statistical Analysis op...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>19.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>183.0</td>\n",
+       "      <td>2011-02-12 05:50:03</td>\n",
+       "      <td>2010-07-19 19:13:28</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>4</td>\n",
+       "      <td>1</td>\n",
+       "      <td>135.0</td>\n",
+       "      <td>2010-07-19 19:13:31</td>\n",
+       "      <td>13</td>\n",
+       "      <td>5224.0</td>\n",
+       "      <td>&lt;p&gt;I have two groups of data.  Each with a dif...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-09-08 03:00:19</td>\n",
+       "      <td>Assessing the significance of differences in d...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>5</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:14:43</td>\n",
+       "      <td>81</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;The R-project&lt;/p&gt;\\n\\n&lt;p&gt;&lt;a href=\"http://www...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:21:15</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:21:15</td>\n",
+       "      <td>2010-07-19 19:14:43</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "<p>5 rows × 21 columns</p>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "   Id  PostTypeId  AcceptedAnswerId         CreaionDate  Score  ViewCount  \\\n",
+       "0   1           1              15.0 2010-07-19 19:12:12     23     1278.0   \n",
+       "1   2           1              59.0 2010-07-19 19:12:57     22     8198.0   \n",
+       "2   3           1               5.0 2010-07-19 19:13:28     54     3613.0   \n",
+       "3   4           1             135.0 2010-07-19 19:13:31     13     5224.0   \n",
+       "4   5           2               NaN 2010-07-19 19:14:43     81        NaN   \n",
+       "\n",
+       "                                                Body  OwnerUserId  \\\n",
+       "0  <p>How should I elicit prior distributions fro...          8.0   \n",
+       "1  <p>In many different statistical methods there...         24.0   \n",
+       "2  <p>What are some valuable Statistical Analysis...         18.0   \n",
+       "3  <p>I have two groups of data.  Each with a dif...         23.0   \n",
+       "4  <p>The R-project</p>\\n\\n<p><a href=\"http://www...         23.0   \n",
+       "\n",
+       "      LasActivityDate                                              Title  ...  \\\n",
+       "0 2010-09-15 21:08:26                      Eliciting priors from experts  ...   \n",
+       "1 2012-11-12 09:21:54                                 What is normality?  ...   \n",
+       "2 2013-05-27 14:48:36  What are some valuable Statistical Analysis op...  ...   \n",
+       "3 2010-09-08 03:00:19  Assessing the significance of differences in d...  ...   \n",
+       "4 2010-07-19 19:21:15                                               None  ...   \n",
+       "\n",
+       "  AnswerCount  CommentCount  FavoriteCount  LastEditorUserId  \\\n",
+       "0         5.0             1           14.0               NaN   \n",
+       "1         7.0             1            8.0              88.0   \n",
+       "2        19.0             4           36.0             183.0   \n",
+       "3         5.0             2            2.0               NaN   \n",
+       "4         NaN             3            NaN              23.0   \n",
+       "\n",
+       "         LastEditDate  CommunityOwnedDate ParentId  ClosedDate  \\\n",
+       "0                 NaT                 NaT      NaN         NaT   \n",
+       "1 2010-08-07 17:56:44                 NaT      NaN         NaT   \n",
+       "2 2011-02-12 05:50:03 2010-07-19 19:13:28      NaN         NaT   \n",
+       "3                 NaT                 NaT      NaN         NaT   \n",
+       "4 2010-07-19 19:21:15 2010-07-19 19:14:43      3.0         NaT   \n",
+       "\n",
+       "  OwnerDisplayName LastEditorDisplayName  \n",
+       "0             None                  None  \n",
+       "1             None                  None  \n",
+       "2             None                  None  \n",
+       "3             None                  None  \n",
+       "4             None                  None  \n",
+       "\n",
+       "[5 rows x 21 columns]"
+      ]
+     },
+     "execution_count": 36,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "TablePosts = pandas.read_sql_query('SELECT * FROM stats.posts;', conexion)\n",
+    "TablePosts.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -93,10 +879,1914 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 41,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "<div>\n",
+       "<style scoped>\n",
+       "    .dataframe tbody tr th:only-of-type {\n",
+       "        vertical-align: middle;\n",
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+       "\n",
+       "    .dataframe tbody tr th {\n",
+       "        vertical-align: top;\n",
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+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
+       "      <th>postId</th>\n",
+       "      <th>PostTypeId</th>\n",
+       "      <th>AcceptedAnswerId</th>\n",
+       "      <th>CreaionDate</th>\n",
+       "      <th>Score</th>\n",
+       "      <th>ViewCount</th>\n",
+       "      <th>Body</th>\n",
+       "      <th>userId</th>\n",
+       "      <th>LasActivityDate</th>\n",
+       "      <th>Title</th>\n",
+       "      <th>...</th>\n",
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+       "      <th>CommentCount</th>\n",
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+       "      <th>LastEditDate</th>\n",
+       "      <th>CommunityOwnedDate</th>\n",
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+       "      <th>OwnerDisplayName</th>\n",
+       "      <th>LastEditorDisplayName</th>\n",
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+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>2010-07-19 19:12:12</td>\n",
+       "      <td>23</td>\n",
+       "      <td>1278.0</td>\n",
+       "      <td>&lt;p&gt;How should I elicit prior distributions fro...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2010-09-15 21:08:26</td>\n",
+       "      <td>Eliciting priors from experts</td>\n",
+       "      <td>...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>14.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>2</td>\n",
+       "      <td>1</td>\n",
+       "      <td>59.0</td>\n",
+       "      <td>2010-07-19 19:12:57</td>\n",
+       "      <td>22</td>\n",
+       "      <td>8198.0</td>\n",
+       "      <td>&lt;p&gt;In many different statistical methods there...</td>\n",
+       "      <td>24.0</td>\n",
+       "      <td>2012-11-12 09:21:54</td>\n",
+       "      <td>What is normality?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>88.0</td>\n",
+       "      <td>2010-08-07 17:56:44</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>3</td>\n",
+       "      <td>1</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2010-07-19 19:13:28</td>\n",
+       "      <td>54</td>\n",
+       "      <td>3613.0</td>\n",
+       "      <td>&lt;p&gt;What are some valuable Statistical Analysis...</td>\n",
+       "      <td>18.0</td>\n",
+       "      <td>2013-05-27 14:48:36</td>\n",
+       "      <td>What are some valuable Statistical Analysis op...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>19.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>183.0</td>\n",
+       "      <td>2011-02-12 05:50:03</td>\n",
+       "      <td>2010-07-19 19:13:28</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>4</td>\n",
+       "      <td>1</td>\n",
+       "      <td>135.0</td>\n",
+       "      <td>2010-07-19 19:13:31</td>\n",
+       "      <td>13</td>\n",
+       "      <td>5224.0</td>\n",
+       "      <td>&lt;p&gt;I have two groups of data.  Each with a dif...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-09-08 03:00:19</td>\n",
+       "      <td>Assessing the significance of differences in d...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>5</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:14:43</td>\n",
+       "      <td>81</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;The R-project&lt;/p&gt;\\n\\n&lt;p&gt;&lt;a href=\"http://www...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:21:15</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:21:15</td>\n",
+       "      <td>2010-07-19 19:14:43</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>5</th>\n",
+       "      <td>6</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:14:44</td>\n",
+       "      <td>152</td>\n",
+       "      <td>29229.0</td>\n",
+       "      <td>&lt;p&gt;Last year, I read a blog post from &lt;a href=...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2014-05-29 03:54:31</td>\n",
+       "      <td>The Two Cultures: statistics vs. machine learn...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>5</td>\n",
+       "      <td>137.0</td>\n",
+       "      <td>22047.0</td>\n",
+       "      <td>2013-06-07 06:38:10</td>\n",
+       "      <td>2010-08-09 13:05:50</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>6</th>\n",
+       "      <td>7</td>\n",
+       "      <td>1</td>\n",
+       "      <td>18.0</td>\n",
+       "      <td>2010-07-19 19:15:59</td>\n",
+       "      <td>76</td>\n",
+       "      <td>5808.0</td>\n",
+       "      <td>&lt;p&gt;I've been working on a new method for analy...</td>\n",
+       "      <td>38.0</td>\n",
+       "      <td>2013-12-28 06:53:10</td>\n",
+       "      <td>Locating freely available data samples</td>\n",
+       "      <td>...</td>\n",
+       "      <td>24.0</td>\n",
+       "      <td>3</td>\n",
+       "      <td>79.0</td>\n",
+       "      <td>253.0</td>\n",
+       "      <td>2013-09-26 21:50:36</td>\n",
+       "      <td>2010-07-20 20:50:48</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>7</th>\n",
+       "      <td>8</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:16:21</td>\n",
+       "      <td>0</td>\n",
+       "      <td>288.0</td>\n",
+       "      <td>&lt;p&gt;Sorry, but the emptyness was a bit overwhel...</td>\n",
+       "      <td>37.0</td>\n",
+       "      <td>2010-10-18 07:57:31</td>\n",
+       "      <td>So how many staticians *does* it take to screw...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>449.0</td>\n",
+       "      <td>2010-10-18 07:57:31</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 20:19:46</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>8</th>\n",
+       "      <td>9</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:16:27</td>\n",
+       "      <td>13</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://incanter.org/\"&gt;Incanter&lt;/a&gt;...</td>\n",
+       "      <td>50.0</td>\n",
+       "      <td>2010-07-19 19:16:27</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2010-07-19 19:16:27</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>9</th>\n",
+       "      <td>10</td>\n",
+       "      <td>1</td>\n",
+       "      <td>1887.0</td>\n",
+       "      <td>2010-07-19 19:17:47</td>\n",
+       "      <td>23</td>\n",
+       "      <td>21925.0</td>\n",
+       "      <td>&lt;p&gt;Many studies in the social sciences use Lik...</td>\n",
+       "      <td>24.0</td>\n",
+       "      <td>2012-10-23 17:33:41</td>\n",
+       "      <td>Under what conditions should Likert scales be ...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>4.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>12.0</td>\n",
+       "      <td>919.0</td>\n",
+       "      <td>2011-03-30 15:31:46</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>10</th>\n",
+       "      <td>11</td>\n",
+       "      <td>1</td>\n",
+       "      <td>1201.0</td>\n",
+       "      <td>2010-07-19 19:18:30</td>\n",
+       "      <td>2</td>\n",
+       "      <td>224.0</td>\n",
+       "      <td>&lt;p&gt;Is there a good, modern treatment covering ...</td>\n",
+       "      <td>34.0</td>\n",
+       "      <td>2010-08-03 21:50:09</td>\n",
+       "      <td>Multivariate Interpolation Approaches</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>34.0</td>\n",
+       "      <td>2010-07-28 07:58:52</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>11</th>\n",
+       "      <td>12</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:18:41</td>\n",
+       "      <td>20</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;See my response to &lt;a href=\"http://stackove...</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>2010-07-19 19:18:41</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2011-08-12 20:29:33</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>12</th>\n",
+       "      <td>13</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:18:56</td>\n",
+       "      <td>14</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Machine Learning seems to have its basis in...</td>\n",
+       "      <td>23.0</td>\n",
+       "      <td>2010-07-19 19:18:56</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>6.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>13</th>\n",
+       "      <td>14</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:19:03</td>\n",
+       "      <td>5</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;I second that Jay. Why is R valuable? Here'...</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>2010-07-19 19:19:03</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2010-07-19 19:19:03</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>14</th>\n",
+       "      <td>15</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:19:46</td>\n",
+       "      <td>13</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;John Cook gives some interesting recommenda...</td>\n",
+       "      <td>6.0</td>\n",
+       "      <td>2010-07-19 19:19:46</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>15</th>\n",
+       "      <td>16</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:22:31</td>\n",
+       "      <td>16</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Two projects spring to mind:&lt;/p&gt;\\n\\n&lt;ol&gt;\\n&lt;...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2010-07-19 20:43:02</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2010-07-19 20:43:02</td>\n",
+       "      <td>2010-07-19 19:22:31</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>16</th>\n",
+       "      <td>17</td>\n",
+       "      <td>1</td>\n",
+       "      <td>29.0</td>\n",
+       "      <td>2010-07-19 19:24:12</td>\n",
+       "      <td>9</td>\n",
+       "      <td>1261.0</td>\n",
+       "      <td>&lt;p&gt;I have four competing models which I use to...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2012-01-22 23:34:51</td>\n",
+       "      <td>How can I adapt ANOVA for binary data?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>7972.0</td>\n",
+       "      <td>2012-01-22 23:34:51</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>user28</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>17</th>\n",
+       "      <td>18</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:24:18</td>\n",
+       "      <td>31</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Also see the UCI machine learning Data Repo...</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>2010-07-19 19:24:18</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2011-08-12 20:31:32</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>18</th>\n",
+       "      <td>19</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:24:21</td>\n",
+       "      <td>12</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://www.gapminder.org/data/\"&gt;Ga...</td>\n",
+       "      <td>55.0</td>\n",
+       "      <td>2010-07-19 19:24:21</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2011-08-12 20:29:45</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>19</th>\n",
+       "      <td>20</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:24:35</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;The assumption of normality assumes your da...</td>\n",
+       "      <td>37.0</td>\n",
+       "      <td>2010-07-19 19:24:35</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>20</th>\n",
+       "      <td>21</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:24:36</td>\n",
+       "      <td>4</td>\n",
+       "      <td>184.0</td>\n",
+       "      <td>&lt;p&gt;What are some of the ways to forecast demog...</td>\n",
+       "      <td>59.0</td>\n",
+       "      <td>2010-09-30 21:14:45</td>\n",
+       "      <td>Forecasting demographic census</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>930.0</td>\n",
+       "      <td>2010-09-30 21:14:45</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>21</th>\n",
+       "      <td>22</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:25:39</td>\n",
+       "      <td>102</td>\n",
+       "      <td>21916.0</td>\n",
+       "      <td>&lt;p&gt;How would you describe in plain English the...</td>\n",
+       "      <td>66.0</td>\n",
+       "      <td>2014-06-05 02:06:32</td>\n",
+       "      <td>Bayesian and frequentist reasoning in plain En...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>67.0</td>\n",
+       "      <td>930.0</td>\n",
+       "      <td>2011-10-04 07:05:14</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>22</th>\n",
+       "      <td>23</td>\n",
+       "      <td>1</td>\n",
+       "      <td>91.0</td>\n",
+       "      <td>2010-07-19 19:26:04</td>\n",
+       "      <td>10</td>\n",
+       "      <td>7694.0</td>\n",
+       "      <td>&lt;p&gt;How can I find the PDF (probability density...</td>\n",
+       "      <td>69.0</td>\n",
+       "      <td>2010-07-20 08:52:27</td>\n",
+       "      <td>Finding the PDF given the CDF</td>\n",
+       "      <td>...</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>23</th>\n",
+       "      <td>24</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:26:13</td>\n",
+       "      <td>17</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;For doing a variety of MCMC tasks in Python...</td>\n",
+       "      <td>61.0</td>\n",
+       "      <td>2010-07-19 19:26:13</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2010-07-19 19:26:13</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>24</th>\n",
+       "      <td>25</td>\n",
+       "      <td>1</td>\n",
+       "      <td>32.0</td>\n",
+       "      <td>2010-07-19 19:27:13</td>\n",
+       "      <td>7</td>\n",
+       "      <td>2095.0</td>\n",
+       "      <td>&lt;p&gt;What modern tools (Windows-based) do you su...</td>\n",
+       "      <td>69.0</td>\n",
+       "      <td>2014-08-13 20:29:48</td>\n",
+       "      <td>Tools for modeling financial time series</td>\n",
+       "      <td>...</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>69.0</td>\n",
+       "      <td>2010-07-26 23:38:29</td>\n",
+       "      <td>2010-07-26 23:38:29</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>25</th>\n",
+       "      <td>26</td>\n",
+       "      <td>1</td>\n",
+       "      <td>61.0</td>\n",
+       "      <td>2010-07-19 19:27:43</td>\n",
+       "      <td>18</td>\n",
+       "      <td>3476.0</td>\n",
+       "      <td>&lt;p&gt;What is a standard deviation, how is it cal...</td>\n",
+       "      <td>75.0</td>\n",
+       "      <td>2013-07-30 10:19:04</td>\n",
+       "      <td>What is a standard deviation?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>14</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>22047.0</td>\n",
+       "      <td>2013-07-30 10:19:04</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>26</th>\n",
+       "      <td>27</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://mathforum.org/workshops/sum...</td>\n",
+       "      <td>68.0</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2011-08-12 20:29:55</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>27</th>\n",
+       "      <td>28</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>6</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;&lt;a href=\"http://www.gnu.org/software/gsl/\" ...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>2010-07-19 19:28:12</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>user28</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>28</th>\n",
+       "      <td>29</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2010-07-19 19:28:15</td>\n",
+       "      <td>5</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Contingency table (chi-square). Also Logist...</td>\n",
+       "      <td>36.0</td>\n",
+       "      <td>2010-07-19 19:28:15</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>17.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>29</th>\n",
+       "      <td>30</td>\n",
+       "      <td>1</td>\n",
+       "      <td>55.0</td>\n",
+       "      <td>2010-07-19 19:28:34</td>\n",
+       "      <td>7</td>\n",
+       "      <td>705.0</td>\n",
+       "      <td>&lt;p&gt;Which methods are used for testing random v...</td>\n",
+       "      <td>69.0</td>\n",
+       "      <td>2011-05-12 18:38:27</td>\n",
+       "      <td>Testing random variate generation algorithms</td>\n",
+       "      <td>...</td>\n",
+       "      <td>8.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>7.0</td>\n",
+       "      <td>919.0</td>\n",
+       "      <td>2010-08-25 14:12:54</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>...</th>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>...</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91946</th>\n",
+       "      <td>115346</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 13:15:18</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;First, let's try to simulate some data with...</td>\n",
+       "      <td>42434.0</td>\n",
+       "      <td>2014-09-13 13:15:18</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>113980.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91947</th>\n",
+       "      <td>115348</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 15:17:03</td>\n",
+       "      <td>0</td>\n",
+       "      <td>18.0</td>\n",
+       "      <td>&lt;p&gt;In the game of Bridge, 52 cards are distrub...</td>\n",
+       "      <td>55564.0</td>\n",
+       "      <td>2014-09-13 16:25:32</td>\n",
+       "      <td>Please help me interpret this goodness of fit ...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>55564.0</td>\n",
+       "      <td>2014-09-13 15:41:36</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91948</th>\n",
+       "      <td>115350</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 15:26:01</td>\n",
+       "      <td>0</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>&lt;p&gt;How do we specify negative costs in rpart? ...</td>\n",
+       "      <td>55731.0</td>\n",
+       "      <td>2014-09-13 15:26:01</td>\n",
+       "      <td>Specifying negative costs (benefits) in rpart'...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91949</th>\n",
+       "      <td>115351</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 15:32:18</td>\n",
+       "      <td>1</td>\n",
+       "      <td>9.0</td>\n",
+       "      <td>&lt;p&gt;If one is conducting a survey in which all ...</td>\n",
+       "      <td>7331.0</td>\n",
+       "      <td>2014-09-13 15:43:23</td>\n",
+       "      <td>Sampling frame of a voluntary survey</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>7290.0</td>\n",
+       "      <td>2014-09-13 15:43:23</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91950</th>\n",
+       "      <td>115352</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 15:56:55</td>\n",
+       "      <td>0</td>\n",
+       "      <td>16.0</td>\n",
+       "      <td>&lt;p&gt;For example, I was looking at &lt;a href=\"http...</td>\n",
+       "      <td>55734.0</td>\n",
+       "      <td>2014-09-13 16:15:30</td>\n",
+       "      <td>Is there a way to estimate the distribution fr...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91951</th>\n",
+       "      <td>115353</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 16:15:30</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;I have strong reservations about whether me...</td>\n",
+       "      <td>7290.0</td>\n",
+       "      <td>2014-09-13 16:15:30</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115352.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91952</th>\n",
+       "      <td>115354</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 16:25:32</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;If all the null hypotheses were true, 5% of...</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-13 16:25:32</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115348.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91953</th>\n",
+       "      <td>115355</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 16:30:00</td>\n",
+       "      <td>3</td>\n",
+       "      <td>49.0</td>\n",
+       "      <td>&lt;p&gt;I have a methodological question, and there...</td>\n",
+       "      <td>35413.0</td>\n",
+       "      <td>2014-09-13 18:53:58</td>\n",
+       "      <td>Adjust for everything you have in propensity s...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>2.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91954</th>\n",
+       "      <td>115356</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 16:34:58</td>\n",
+       "      <td>1</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>&lt;p&gt;I'm a beginner in statistics and I have to ...</td>\n",
+       "      <td>55733.0</td>\n",
+       "      <td>2014-09-13 20:45:45</td>\n",
+       "      <td>How to interpret glmer results (variance, corr...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>55733.0</td>\n",
+       "      <td>2014-09-13 20:45:45</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91955</th>\n",
+       "      <td>115357</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 17:07:54</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;I've personally been asking this question f...</td>\n",
+       "      <td>44142.0</td>\n",
+       "      <td>2014-09-13 17:07:54</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115355.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91956</th>\n",
+       "      <td>115358</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 17:29:23</td>\n",
+       "      <td>2</td>\n",
+       "      <td>15.0</td>\n",
+       "      <td>&lt;p&gt;Are there any formulae for the quantiles of...</td>\n",
+       "      <td>1569.0</td>\n",
+       "      <td>2014-09-14 02:54:13</td>\n",
+       "      <td>Quantiles of a compound gamma/negative binomia...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91957</th>\n",
+       "      <td>115360</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 18:06:50</td>\n",
+       "      <td>2</td>\n",
+       "      <td>40.0</td>\n",
+       "      <td>&lt;p&gt;Is Student's t test a Wald test?&lt;/p&gt;\\n\\n&lt;p&gt;...</td>\n",
+       "      <td>55738.0</td>\n",
+       "      <td>2014-09-13 18:06:50</td>\n",
+       "      <td>Is Student's t test a Wald test?</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91958</th>\n",
+       "      <td>115361</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 18:36:36</td>\n",
+       "      <td>0</td>\n",
+       "      <td>12.0</td>\n",
+       "      <td>&lt;p&gt;Given the biometric match scores, I am requ...</td>\n",
+       "      <td>55383.0</td>\n",
+       "      <td>2014-09-13 18:36:36</td>\n",
+       "      <td>Plotting of density estimates in matlab</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91959</th>\n",
+       "      <td>115362</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 18:44:31</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Theoretical insight, institutional knowledg...</td>\n",
+       "      <td>7071.0</td>\n",
+       "      <td>2014-09-13 18:53:58</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>7071.0</td>\n",
+       "      <td>2014-09-13 18:53:58</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115355.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91960</th>\n",
+       "      <td>115363</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 19:37:20</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;I think I got a very simple answer.&lt;/p&gt;\\n\\n...</td>\n",
+       "      <td>2676.0</td>\n",
+       "      <td>2014-09-13 19:37:20</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115279.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91961</th>\n",
+       "      <td>115364</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 19:50:17</td>\n",
+       "      <td>0</td>\n",
+       "      <td>11.0</td>\n",
+       "      <td>&lt;p&gt;I'm trying to find the most similar sample ...</td>\n",
+       "      <td>52858.0</td>\n",
+       "      <td>2014-09-13 21:30:41</td>\n",
+       "      <td>In search of a proper similarity function</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>3</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>52858.0</td>\n",
+       "      <td>2014-09-13 21:30:41</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91962</th>\n",
+       "      <td>115365</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 20:13:11</td>\n",
+       "      <td>-1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;blockquote&gt;\\n  &lt;p&gt;Is there some approach to u...</td>\n",
+       "      <td>28236.0</td>\n",
+       "      <td>2014-09-13 20:13:11</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>108430.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91963</th>\n",
+       "      <td>115366</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 20:36:55</td>\n",
+       "      <td>1</td>\n",
+       "      <td>17.0</td>\n",
+       "      <td>&lt;p&gt;Does any standard statistical software like...</td>\n",
+       "      <td>55742.0</td>\n",
+       "      <td>2014-09-13 23:18:30</td>\n",
+       "      <td>Missing data analysis software</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91964</th>\n",
+       "      <td>115367</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 20:57:24</td>\n",
+       "      <td>1</td>\n",
+       "      <td>97.0</td>\n",
+       "      <td>&lt;p&gt;Jon and Frank ordered 2 footlong sandwiches...</td>\n",
+       "      <td>41961.0</td>\n",
+       "      <td>2014-09-14 02:05:41</td>\n",
+       "      <td>How to add odds? (or how I got the wrong sandw...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>3.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>919.0</td>\n",
+       "      <td>2014-09-13 21:11:36</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91965</th>\n",
+       "      <td>115368</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 21:01:39</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;You need to multiply the probabilities with...</td>\n",
+       "      <td>24808.0</td>\n",
+       "      <td>2014-09-13 21:01:39</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115367.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91966</th>\n",
+       "      <td>115369</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 21:27:49</td>\n",
+       "      <td>4</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Line up the four sandwiches in a row where ...</td>\n",
+       "      <td>6633.0</td>\n",
+       "      <td>2014-09-13 21:27:49</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115367.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91967</th>\n",
+       "      <td>115370</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 21:39:30</td>\n",
+       "      <td>1</td>\n",
+       "      <td>13.0</td>\n",
+       "      <td>&lt;p&gt;im analyzing an article for my studies with...</td>\n",
+       "      <td>55744.0</td>\n",
+       "      <td>2014-09-13 21:39:30</td>\n",
+       "      <td>Poisson regression</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91968</th>\n",
+       "      <td>115371</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 21:55:39</td>\n",
+       "      <td>0</td>\n",
+       "      <td>19.0</td>\n",
+       "      <td>&lt;p&gt;I am trying to estimate the school effects ...</td>\n",
+       "      <td>35801.0</td>\n",
+       "      <td>2014-09-13 23:15:00</td>\n",
+       "      <td>Estimation of school effects using xtmixed (in...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>35801.0</td>\n",
+       "      <td>2014-09-13 22:51:35</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91969</th>\n",
+       "      <td>115372</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 23:15:00</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;If prior to running the xtreg command you h...</td>\n",
+       "      <td>48579.0</td>\n",
+       "      <td>2014-09-13 23:15:00</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>9</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115371.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91970</th>\n",
+       "      <td>115373</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 23:18:30</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Yes, the &lt;a href=\"http://cran.r-project.org...</td>\n",
+       "      <td>48579.0</td>\n",
+       "      <td>2014-09-13 23:18:30</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115366.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91971</th>\n",
+       "      <td>115374</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 23:45:39</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;This grew too long for a comment, but I thi...</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-14 02:05:41</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-14 02:05:41</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115367.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91972</th>\n",
+       "      <td>115375</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-13 23:46:05</td>\n",
+       "      <td>0</td>\n",
+       "      <td>9.0</td>\n",
+       "      <td>&lt;p&gt;Assume a classification problem where there...</td>\n",
+       "      <td>49365.0</td>\n",
+       "      <td>2014-09-14 02:09:23</td>\n",
+       "      <td>Detecting a consistent pattern in a dataset vi...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>1.0</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91973</th>\n",
+       "      <td>115376</td>\n",
+       "      <td>1</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-14 01:27:54</td>\n",
+       "      <td>1</td>\n",
+       "      <td>5.0</td>\n",
+       "      <td>&lt;p&gt;My goal is to create a formula that can giv...</td>\n",
+       "      <td>55746.0</td>\n",
+       "      <td>2014-09-14 01:40:55</td>\n",
+       "      <td>How to project video viewcount based on histor...</td>\n",
+       "      <td>...</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>7290.0</td>\n",
+       "      <td>2014-09-14 01:40:55</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91974</th>\n",
+       "      <td>115377</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-14 02:03:28</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;As a practical answer to the real questions...</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-14 02:54:13</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>805.0</td>\n",
+       "      <td>2014-09-14 02:54:13</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115358.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>91975</th>\n",
+       "      <td>115378</td>\n",
+       "      <td>2</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>2014-09-14 02:09:23</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>&lt;p&gt;Decision trees are notoriously &lt;strong&gt;unst...</td>\n",
+       "      <td>7250.0</td>\n",
+       "      <td>2014-09-14 02:09:23</td>\n",
+       "      <td>None</td>\n",
+       "      <td>...</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>0</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaN</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>115375.0</td>\n",
+       "      <td>NaT</td>\n",
+       "      <td>None</td>\n",
+       "      <td>None</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "<p>91976 rows × 21 columns</p>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "       postId  PostTypeId  AcceptedAnswerId         CreaionDate  Score  \\\n",
+       "0           1           1              15.0 2010-07-19 19:12:12     23   \n",
+       "1           2           1              59.0 2010-07-19 19:12:57     22   \n",
+       "2           3           1               5.0 2010-07-19 19:13:28     54   \n",
+       "3           4           1             135.0 2010-07-19 19:13:31     13   \n",
+       "4           5           2               NaN 2010-07-19 19:14:43     81   \n",
+       "5           6           1               NaN 2010-07-19 19:14:44    152   \n",
+       "6           7           1              18.0 2010-07-19 19:15:59     76   \n",
+       "7           8           1               NaN 2010-07-19 19:16:21      0   \n",
+       "8           9           2               NaN 2010-07-19 19:16:27     13   \n",
+       "9          10           1            1887.0 2010-07-19 19:17:47     23   \n",
+       "10         11           1            1201.0 2010-07-19 19:18:30      2   \n",
+       "11         12           2               NaN 2010-07-19 19:18:41     20   \n",
+       "12         13           2               NaN 2010-07-19 19:18:56     14   \n",
+       "13         14           2               NaN 2010-07-19 19:19:03      5   \n",
+       "14         15           2               NaN 2010-07-19 19:19:46     13   \n",
+       "15         16           2               NaN 2010-07-19 19:22:31     16   \n",
+       "16         17           1              29.0 2010-07-19 19:24:12      9   \n",
+       "17         18           2               NaN 2010-07-19 19:24:18     31   \n",
+       "18         19           2               NaN 2010-07-19 19:24:21     12   \n",
+       "19         20           2               NaN 2010-07-19 19:24:35      3   \n",
+       "20         21           1               NaN 2010-07-19 19:24:36      4   \n",
+       "21         22           1               NaN 2010-07-19 19:25:39    102   \n",
+       "22         23           1              91.0 2010-07-19 19:26:04     10   \n",
+       "23         24           2               NaN 2010-07-19 19:26:13     17   \n",
+       "24         25           1              32.0 2010-07-19 19:27:13      7   \n",
+       "25         26           1              61.0 2010-07-19 19:27:43     18   \n",
+       "26         27           2               NaN 2010-07-19 19:28:12      4   \n",
+       "27         28           2               NaN 2010-07-19 19:28:12      6   \n",
+       "28         29           2               NaN 2010-07-19 19:28:15      5   \n",
+       "29         30           1              55.0 2010-07-19 19:28:34      7   \n",
+       "...       ...         ...               ...                 ...    ...   \n",
+       "91946  115346           2               NaN 2014-09-13 13:15:18      0   \n",
+       "91947  115348           1               NaN 2014-09-13 15:17:03      0   \n",
+       "91948  115350           1               NaN 2014-09-13 15:26:01      0   \n",
+       "91949  115351           1               NaN 2014-09-13 15:32:18      1   \n",
+       "91950  115352           1               NaN 2014-09-13 15:56:55      0   \n",
+       "91951  115353           2               NaN 2014-09-13 16:15:30      0   \n",
+       "91952  115354           2               NaN 2014-09-13 16:25:32      2   \n",
+       "91953  115355           1               NaN 2014-09-13 16:30:00      3   \n",
+       "91954  115356           1               NaN 2014-09-13 16:34:58      1   \n",
+       "91955  115357           2               NaN 2014-09-13 17:07:54      1   \n",
+       "91956  115358           1               NaN 2014-09-13 17:29:23      2   \n",
+       "91957  115360           1               NaN 2014-09-13 18:06:50      2   \n",
+       "91958  115361           1               NaN 2014-09-13 18:36:36      0   \n",
+       "91959  115362           2               NaN 2014-09-13 18:44:31      2   \n",
+       "91960  115363           2               NaN 2014-09-13 19:37:20      0   \n",
+       "91961  115364           1               NaN 2014-09-13 19:50:17      0   \n",
+       "91962  115365           2               NaN 2014-09-13 20:13:11     -1   \n",
+       "91963  115366           1               NaN 2014-09-13 20:36:55      1   \n",
+       "91964  115367           1               NaN 2014-09-13 20:57:24      1   \n",
+       "91965  115368           2               NaN 2014-09-13 21:01:39      4   \n",
+       "91966  115369           2               NaN 2014-09-13 21:27:49      4   \n",
+       "91967  115370           1               NaN 2014-09-13 21:39:30      1   \n",
+       "91968  115371           1               NaN 2014-09-13 21:55:39      0   \n",
+       "91969  115372           2               NaN 2014-09-13 23:15:00      0   \n",
+       "91970  115373           2               NaN 2014-09-13 23:18:30      0   \n",
+       "91971  115374           2               NaN 2014-09-13 23:45:39      2   \n",
+       "91972  115375           1               NaN 2014-09-13 23:46:05      0   \n",
+       "91973  115376           1               NaN 2014-09-14 01:27:54      1   \n",
+       "91974  115377           2               NaN 2014-09-14 02:03:28      0   \n",
+       "91975  115378           2               NaN 2014-09-14 02:09:23      0   \n",
+       "\n",
+       "       ViewCount                                               Body   userId  \\\n",
+       "0         1278.0  <p>How should I elicit prior distributions fro...      8.0   \n",
+       "1         8198.0  <p>In many different statistical methods there...     24.0   \n",
+       "2         3613.0  <p>What are some valuable Statistical Analysis...     18.0   \n",
+       "3         5224.0  <p>I have two groups of data.  Each with a dif...     23.0   \n",
+       "4            NaN  <p>The R-project</p>\\n\\n<p><a href=\"http://www...     23.0   \n",
+       "5        29229.0  <p>Last year, I read a blog post from <a href=...      5.0   \n",
+       "6         5808.0  <p>I've been working on a new method for analy...     38.0   \n",
+       "7          288.0  <p>Sorry, but the emptyness was a bit overwhel...     37.0   \n",
+       "8            NaN  <p><a href=\"http://incanter.org/\">Incanter</a>...     50.0   \n",
+       "9        21925.0  <p>Many studies in the social sciences use Lik...     24.0   \n",
+       "10         224.0  <p>Is there a good, modern treatment covering ...     34.0   \n",
+       "11           NaN  <p>See my response to <a href=\"http://stackove...      5.0   \n",
+       "12           NaN  <p>Machine Learning seems to have its basis in...     23.0   \n",
+       "13           NaN  <p>I second that Jay. Why is R valuable? Here'...     36.0   \n",
+       "14           NaN  <p>John Cook gives some interesting recommenda...      6.0   \n",
+       "15           NaN  <p>Two projects spring to mind:</p>\\n\\n<ol>\\n<...      8.0   \n",
+       "16        1261.0  <p>I have four competing models which I use to...      NaN   \n",
+       "17           NaN  <p>Also see the UCI machine learning Data Repo...     36.0   \n",
+       "18           NaN  <p><a href=\"http://www.gapminder.org/data/\">Ga...     55.0   \n",
+       "19           NaN  <p>The assumption of normality assumes your da...     37.0   \n",
+       "20         184.0  <p>What are some of the ways to forecast demog...     59.0   \n",
+       "21       21916.0  <p>How would you describe in plain English the...     66.0   \n",
+       "22        7694.0  <p>How can I find the PDF (probability density...     69.0   \n",
+       "23           NaN  <p>For doing a variety of MCMC tasks in Python...     61.0   \n",
+       "24        2095.0  <p>What modern tools (Windows-based) do you su...     69.0   \n",
+       "25        3476.0  <p>What is a standard deviation, how is it cal...     75.0   \n",
+       "26           NaN  <p><a href=\"http://mathforum.org/workshops/sum...     68.0   \n",
+       "27           NaN  <p><a href=\"http://www.gnu.org/software/gsl/\" ...      NaN   \n",
+       "28           NaN  <p>Contingency table (chi-square). Also Logist...     36.0   \n",
+       "29         705.0  <p>Which methods are used for testing random v...     69.0   \n",
+       "...          ...                                                ...      ...   \n",
+       "91946        NaN  <p>First, let's try to simulate some data with...  42434.0   \n",
+       "91947       18.0  <p>In the game of Bridge, 52 cards are distrub...  55564.0   \n",
+       "91948        3.0  <p>How do we specify negative costs in rpart? ...  55731.0   \n",
+       "91949        9.0  <p>If one is conducting a survey in which all ...   7331.0   \n",
+       "91950       16.0  <p>For example, I was looking at <a href=\"http...  55734.0   \n",
+       "91951        NaN  <p>I have strong reservations about whether me...   7290.0   \n",
+       "91952        NaN  <p>If all the null hypotheses were true, 5% of...    805.0   \n",
+       "91953       49.0  <p>I have a methodological question, and there...  35413.0   \n",
+       "91954       15.0  <p>I'm a beginner in statistics and I have to ...  55733.0   \n",
+       "91955        NaN  <p>I've personally been asking this question f...  44142.0   \n",
+       "91956       15.0  <p>Are there any formulae for the quantiles of...   1569.0   \n",
+       "91957       40.0  <p>Is Student's t test a Wald test?</p>\\n\\n<p>...  55738.0   \n",
+       "91958       12.0  <p>Given the biometric match scores, I am requ...  55383.0   \n",
+       "91959        NaN  <p>Theoretical insight, institutional knowledg...   7071.0   \n",
+       "91960        NaN  <p>I think I got a very simple answer.</p>\\n\\n...   2676.0   \n",
+       "91961       11.0  <p>I'm trying to find the most similar sample ...  52858.0   \n",
+       "91962        NaN  <blockquote>\\n  <p>Is there some approach to u...  28236.0   \n",
+       "91963       17.0  <p>Does any standard statistical software like...  55742.0   \n",
+       "91964       97.0  <p>Jon and Frank ordered 2 footlong sandwiches...  41961.0   \n",
+       "91965        NaN  <p>You need to multiply the probabilities with...  24808.0   \n",
+       "91966        NaN  <p>Line up the four sandwiches in a row where ...   6633.0   \n",
+       "91967       13.0  <p>im analyzing an article for my studies with...  55744.0   \n",
+       "91968       19.0  <p>I am trying to estimate the school effects ...  35801.0   \n",
+       "91969        NaN  <p>If prior to running the xtreg command you h...  48579.0   \n",
+       "91970        NaN  <p>Yes, the <a href=\"http://cran.r-project.org...  48579.0   \n",
+       "91971        NaN  <p>This grew too long for a comment, but I thi...    805.0   \n",
+       "91972        9.0  <p>Assume a classification problem where there...  49365.0   \n",
+       "91973        5.0  <p>My goal is to create a formula that can giv...  55746.0   \n",
+       "91974        NaN  <p>As a practical answer to the real questions...    805.0   \n",
+       "91975        NaN  <p>Decision trees are notoriously <strong>unst...   7250.0   \n",
+       "\n",
+       "          LasActivityDate                                              Title  \\\n",
+       "0     2010-09-15 21:08:26                      Eliciting priors from experts   \n",
+       "1     2012-11-12 09:21:54                                 What is normality?   \n",
+       "2     2013-05-27 14:48:36  What are some valuable Statistical Analysis op...   \n",
+       "3     2010-09-08 03:00:19  Assessing the significance of differences in d...   \n",
+       "4     2010-07-19 19:21:15                                               None   \n",
+       "5     2014-05-29 03:54:31  The Two Cultures: statistics vs. machine learn...   \n",
+       "6     2013-12-28 06:53:10             Locating freely available data samples   \n",
+       "7     2010-10-18 07:57:31  So how many staticians *does* it take to screw...   \n",
+       "8     2010-07-19 19:16:27                                               None   \n",
+       "9     2012-10-23 17:33:41  Under what conditions should Likert scales be ...   \n",
+       "10    2010-08-03 21:50:09              Multivariate Interpolation Approaches   \n",
+       "11    2010-07-19 19:18:41                                               None   \n",
+       "12    2010-07-19 19:18:56                                               None   \n",
+       "13    2010-07-19 19:19:03                                               None   \n",
+       "14    2010-07-19 19:19:46                                               None   \n",
+       "15    2010-07-19 20:43:02                                               None   \n",
+       "16    2012-01-22 23:34:51             How can I adapt ANOVA for binary data?   \n",
+       "17    2010-07-19 19:24:18                                               None   \n",
+       "18    2010-07-19 19:24:21                                               None   \n",
+       "19    2010-07-19 19:24:35                                               None   \n",
+       "20    2010-09-30 21:14:45                     Forecasting demographic census   \n",
+       "21    2014-06-05 02:06:32  Bayesian and frequentist reasoning in plain En...   \n",
+       "22    2010-07-20 08:52:27                      Finding the PDF given the CDF   \n",
+       "23    2010-07-19 19:26:13                                               None   \n",
+       "24    2014-08-13 20:29:48           Tools for modeling financial time series   \n",
+       "25    2013-07-30 10:19:04                      What is a standard deviation?   \n",
+       "26    2010-07-19 19:28:12                                               None   \n",
+       "27    2010-07-19 19:28:12                                               None   \n",
+       "28    2010-07-19 19:28:15                                               None   \n",
+       "29    2011-05-12 18:38:27       Testing random variate generation algorithms   \n",
+       "...                   ...                                                ...   \n",
+       "91946 2014-09-13 13:15:18                                               None   \n",
+       "91947 2014-09-13 16:25:32  Please help me interpret this goodness of fit ...   \n",
+       "91948 2014-09-13 15:26:01  Specifying negative costs (benefits) in rpart'...   \n",
+       "91949 2014-09-13 15:43:23               Sampling frame of a voluntary survey   \n",
+       "91950 2014-09-13 16:15:30  Is there a way to estimate the distribution fr...   \n",
+       "91951 2014-09-13 16:15:30                                               None   \n",
+       "91952 2014-09-13 16:25:32                                               None   \n",
+       "91953 2014-09-13 18:53:58  Adjust for everything you have in propensity s...   \n",
+       "91954 2014-09-13 20:45:45  How to interpret glmer results (variance, corr...   \n",
+       "91955 2014-09-13 17:07:54                                               None   \n",
+       "91956 2014-09-14 02:54:13  Quantiles of a compound gamma/negative binomia...   \n",
+       "91957 2014-09-13 18:06:50                   Is Student's t test a Wald test?   \n",
+       "91958 2014-09-13 18:36:36            Plotting of density estimates in matlab   \n",
+       "91959 2014-09-13 18:53:58                                               None   \n",
+       "91960 2014-09-13 19:37:20                                               None   \n",
+       "91961 2014-09-13 21:30:41          In search of a proper similarity function   \n",
+       "91962 2014-09-13 20:13:11                                               None   \n",
+       "91963 2014-09-13 23:18:30                     Missing data analysis software   \n",
+       "91964 2014-09-14 02:05:41  How to add odds? (or how I got the wrong sandw...   \n",
+       "91965 2014-09-13 21:01:39                                               None   \n",
+       "91966 2014-09-13 21:27:49                                               None   \n",
+       "91967 2014-09-13 21:39:30                                 Poisson regression   \n",
+       "91968 2014-09-13 23:15:00  Estimation of school effects using xtmixed (in...   \n",
+       "91969 2014-09-13 23:15:00                                               None   \n",
+       "91970 2014-09-13 23:18:30                                               None   \n",
+       "91971 2014-09-14 02:05:41                                               None   \n",
+       "91972 2014-09-14 02:09:23  Detecting a consistent pattern in a dataset vi...   \n",
+       "91973 2014-09-14 01:40:55  How to project video viewcount based on histor...   \n",
+       "91974 2014-09-14 02:54:13                                               None   \n",
+       "91975 2014-09-14 02:09:23                                               None   \n",
+       "\n",
+       "       ... AnswerCount  CommentCount  FavoriteCount  LastEditorUserId  \\\n",
+       "0      ...         5.0             1           14.0               NaN   \n",
+       "1      ...         7.0             1            8.0              88.0   \n",
+       "2      ...        19.0             4           36.0             183.0   \n",
+       "3      ...         5.0             2            2.0               NaN   \n",
+       "4      ...         NaN             3            NaN              23.0   \n",
+       "5      ...        15.0             5          137.0           22047.0   \n",
+       "6      ...        24.0             3           79.0             253.0   \n",
+       "7      ...         1.0             2            NaN             449.0   \n",
+       "8      ...         NaN             3            NaN               NaN   \n",
+       "9      ...         4.0             4           12.0             919.0   \n",
+       "10     ...         1.0             2            1.0              34.0   \n",
+       "11     ...         NaN             1            NaN               NaN   \n",
+       "12     ...         NaN             4            NaN               NaN   \n",
+       "13     ...         NaN             1            NaN               NaN   \n",
+       "14     ...         NaN             0            NaN               NaN   \n",
+       "15     ...         NaN             3            NaN               8.0   \n",
+       "16     ...         1.0             0            1.0            7972.0   \n",
+       "17     ...         NaN             1            NaN               NaN   \n",
+       "18     ...         NaN             0            NaN               NaN   \n",
+       "19     ...         NaN             2            NaN               NaN   \n",
+       "20     ...         1.0             1            1.0             930.0   \n",
+       "21     ...        15.0             1           67.0             930.0   \n",
+       "22     ...         2.0             1            2.0               NaN   \n",
+       "23     ...         NaN             0            NaN               NaN   \n",
+       "24     ...         7.0             4            5.0              69.0   \n",
+       "25     ...         8.0            14            7.0           22047.0   \n",
+       "26     ...         NaN             0            NaN               NaN   \n",
+       "27     ...         NaN             0            NaN               NaN   \n",
+       "28     ...         NaN             0            NaN               NaN   \n",
+       "29     ...         8.0             2            7.0             919.0   \n",
+       "...    ...         ...           ...            ...               ...   \n",
+       "91946  ...         NaN             0            NaN               NaN   \n",
+       "91947  ...         1.0             3            NaN           55564.0   \n",
+       "91948  ...         0.0             0            NaN               NaN   \n",
+       "91949  ...         0.0             0            NaN            7290.0   \n",
+       "91950  ...         1.0             0            NaN               NaN   \n",
+       "91951  ...         NaN             0            NaN               NaN   \n",
+       "91952  ...         NaN             0            NaN               NaN   \n",
+       "91953  ...         2.0             0            NaN               NaN   \n",
+       "91954  ...         0.0             0            NaN           55733.0   \n",
+       "91955  ...         NaN             0            NaN               NaN   \n",
+       "91956  ...         1.0             0            NaN               NaN   \n",
+       "91957  ...         0.0             4            NaN               NaN   \n",
+       "91958  ...         0.0             1            NaN               NaN   \n",
+       "91959  ...         NaN             0            NaN            7071.0   \n",
+       "91960  ...         NaN             0            NaN               NaN   \n",
+       "91961  ...         0.0             3            NaN           52858.0   \n",
+       "91962  ...         NaN             1            NaN               NaN   \n",
+       "91963  ...         1.0             0            1.0               NaN   \n",
+       "91964  ...         3.0             0            NaN             919.0   \n",
+       "91965  ...         NaN             0            NaN               NaN   \n",
+       "91966  ...         NaN             0            NaN               NaN   \n",
+       "91967  ...         0.0             2            NaN               NaN   \n",
+       "91968  ...         1.0             0            NaN           35801.0   \n",
+       "91969  ...         NaN             9            NaN               NaN   \n",
+       "91970  ...         NaN             0            NaN               NaN   \n",
+       "91971  ...         NaN             2            NaN             805.0   \n",
+       "91972  ...         1.0             0            NaN               NaN   \n",
+       "91973  ...         0.0             2            NaN            7290.0   \n",
+       "91974  ...         NaN             0            NaN             805.0   \n",
+       "91975  ...         NaN             0            NaN               NaN   \n",
+       "\n",
+       "             LastEditDate  CommunityOwnedDate  ParentId          ClosedDate  \\\n",
+       "0                     NaT                 NaT       NaN                 NaT   \n",
+       "1     2010-08-07 17:56:44                 NaT       NaN                 NaT   \n",
+       "2     2011-02-12 05:50:03 2010-07-19 19:13:28       NaN                 NaT   \n",
+       "3                     NaT                 NaT       NaN                 NaT   \n",
+       "4     2010-07-19 19:21:15 2010-07-19 19:14:43       3.0                 NaT   \n",
+       "5     2013-06-07 06:38:10 2010-08-09 13:05:50       NaN                 NaT   \n",
+       "6     2013-09-26 21:50:36 2010-07-20 20:50:48       NaN                 NaT   \n",
+       "7     2010-10-18 07:57:31                 NaT       NaN 2010-07-19 20:19:46   \n",
+       "8                     NaT 2010-07-19 19:16:27       3.0                 NaT   \n",
+       "9     2011-03-30 15:31:46                 NaT       NaN                 NaT   \n",
+       "10    2010-07-28 07:58:52                 NaT       NaN                 NaT   \n",
+       "11                    NaT 2011-08-12 20:29:33       7.0                 NaT   \n",
+       "12                    NaT                 NaT       6.0                 NaT   \n",
+       "13                    NaT 2010-07-19 19:19:03       3.0                 NaT   \n",
+       "14                    NaT                 NaT       1.0                 NaT   \n",
+       "15    2010-07-19 20:43:02 2010-07-19 19:22:31       3.0                 NaT   \n",
+       "16    2012-01-22 23:34:51                 NaT       NaN                 NaT   \n",
+       "17                    NaT 2011-08-12 20:31:32       7.0                 NaT   \n",
+       "18                    NaT 2011-08-12 20:29:45       7.0                 NaT   \n",
+       "19                    NaT                 NaT       2.0                 NaT   \n",
+       "20    2010-09-30 21:14:45                 NaT       NaN                 NaT   \n",
+       "21    2011-10-04 07:05:14                 NaT       NaN                 NaT   \n",
+       "22                    NaT                 NaT       NaN                 NaT   \n",
+       "23                    NaT 2010-07-19 19:26:13       3.0                 NaT   \n",
+       "24    2010-07-26 23:38:29 2010-07-26 23:38:29       NaN                 NaT   \n",
+       "25    2013-07-30 10:19:04                 NaT       NaN                 NaT   \n",
+       "26                    NaT 2011-08-12 20:29:55       7.0                 NaT   \n",
+       "27                    NaT 2010-07-19 19:28:12       3.0                 NaT   \n",
+       "28                    NaT                 NaT      17.0                 NaT   \n",
+       "29    2010-08-25 14:12:54                 NaT       NaN                 NaT   \n",
+       "...                   ...                 ...       ...                 ...   \n",
+       "91946                 NaT                 NaT  113980.0                 NaT   \n",
+       "91947 2014-09-13 15:41:36                 NaT       NaN                 NaT   \n",
+       "91948                 NaT                 NaT       NaN                 NaT   \n",
+       "91949 2014-09-13 15:43:23                 NaT       NaN                 NaT   \n",
+       "91950                 NaT                 NaT       NaN                 NaT   \n",
+       "91951                 NaT                 NaT  115352.0                 NaT   \n",
+       "91952                 NaT                 NaT  115348.0                 NaT   \n",
+       "91953                 NaT                 NaT       NaN                 NaT   \n",
+       "91954 2014-09-13 20:45:45                 NaT       NaN                 NaT   \n",
+       "91955                 NaT                 NaT  115355.0                 NaT   \n",
+       "91956                 NaT                 NaT       NaN                 NaT   \n",
+       "91957                 NaT                 NaT       NaN                 NaT   \n",
+       "91958                 NaT                 NaT       NaN                 NaT   \n",
+       "91959 2014-09-13 18:53:58                 NaT  115355.0                 NaT   \n",
+       "91960                 NaT                 NaT  115279.0                 NaT   \n",
+       "91961 2014-09-13 21:30:41                 NaT       NaN                 NaT   \n",
+       "91962                 NaT                 NaT  108430.0                 NaT   \n",
+       "91963                 NaT                 NaT       NaN                 NaT   \n",
+       "91964 2014-09-13 21:11:36                 NaT       NaN                 NaT   \n",
+       "91965                 NaT                 NaT  115367.0                 NaT   \n",
+       "91966                 NaT                 NaT  115367.0                 NaT   \n",
+       "91967                 NaT                 NaT       NaN                 NaT   \n",
+       "91968 2014-09-13 22:51:35                 NaT       NaN                 NaT   \n",
+       "91969                 NaT                 NaT  115371.0                 NaT   \n",
+       "91970                 NaT                 NaT  115366.0                 NaT   \n",
+       "91971 2014-09-14 02:05:41                 NaT  115367.0                 NaT   \n",
+       "91972                 NaT                 NaT       NaN                 NaT   \n",
+       "91973 2014-09-14 01:40:55                 NaT       NaN                 NaT   \n",
+       "91974 2014-09-14 02:54:13                 NaT  115358.0                 NaT   \n",
+       "91975                 NaT                 NaT  115375.0                 NaT   \n",
+       "\n",
+       "      OwnerDisplayName LastEditorDisplayName  \n",
+       "0                 None                  None  \n",
+       "1                 None                  None  \n",
+       "2                 None                  None  \n",
+       "3                 None                  None  \n",
+       "4                 None                  None  \n",
+       "5                 None                  None  \n",
+       "6                 None                  None  \n",
+       "7                 None                  None  \n",
+       "8                 None                  None  \n",
+       "9                 None                  None  \n",
+       "10                None                  None  \n",
+       "11                None                  None  \n",
+       "12                None                  None  \n",
+       "13                None                  None  \n",
+       "14                None                  None  \n",
+       "15                None                  None  \n",
+       "16              user28                  None  \n",
+       "17                None                  None  \n",
+       "18                None                  None  \n",
+       "19                None                  None  \n",
+       "20                None                  None  \n",
+       "21                None                  None  \n",
+       "22                None                  None  \n",
+       "23                None                  None  \n",
+       "24                None                  None  \n",
+       "25                None                  None  \n",
+       "26                None                  None  \n",
+       "27              user28                  None  \n",
+       "28                None                  None  \n",
+       "29                None                  None  \n",
+       "...                ...                   ...  \n",
+       "91946             None                  None  \n",
+       "91947             None                  None  \n",
+       "91948             None                  None  \n",
+       "91949             None                  None  \n",
+       "91950             None                  None  \n",
+       "91951             None                  None  \n",
+       "91952             None                  None  \n",
+       "91953             None                  None  \n",
+       "91954             None                  None  \n",
+       "91955             None                  None  \n",
+       "91956             None                  None  \n",
+       "91957             None                  None  \n",
+       "91958             None                  None  \n",
+       "91959             None                  None  \n",
+       "91960             None                  None  \n",
+       "91961             None                  None  \n",
+       "91962             None                  None  \n",
+       "91963             None                  None  \n",
+       "91964             None                  None  \n",
+       "91965             None                  None  \n",
+       "91966             None                  None  \n",
+       "91967             None                  None  \n",
+       "91968             None                  None  \n",
+       "91969             None                  None  \n",
+       "91970             None                  None  \n",
+       "91971             None                  None  \n",
+       "91972             None                  None  \n",
+       "91973             None                  None  \n",
+       "91974             None                  None  \n",
+       "91975             None                  None  \n",
+       "\n",
+       "[91976 rows x 21 columns]"
+      ]
+     },
+     "execution_count": 41,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "TablePosts.rename(columns={'Id':'postId', 'OwnerUserId':'userId'},inplace=True)\n",
+    "TablePosts"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -112,7 +2802,9 @@
    "execution_count": null,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "UsersColumns = UsersTable"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -196,7 +2888,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.5"
+   "version": "3.7.3"
   }
  },
  "nbformat": 4,