diff --git a/your-code/.ipynb_checkpoints/main-checkpoint.ipynb b/your-code/.ipynb_checkpoints/main-checkpoint.ipynb
index 31724c5..d8fdd82 100644
--- a/your-code/.ipynb_checkpoints/main-checkpoint.ipynb
+++ b/your-code/.ipynb_checkpoints/main-checkpoint.ipynb
@@ -9,10 +9,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "import pandas as pd"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -23,24 +25,42 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "import pymysql\n",
+    "import sqlalchemy\n",
+    "from sqlalchemy import create_engine"
+   ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "#### 3. Create a mysql engine to set the connection to the server. Check the connection details in [this link](https://relational.fit.cvut.cz/search?tableCount%5B%5D=0-10&tableCount%5B%5D=10-30&dataType%5B%5D=Numeric&databaseSize%5B%5D=KB&databaseSize%5B%5D=MB)"
+    "#### 3. Create a mysql engine to set the connection to the server. Check the connection details in [this link](https://relational.fit.cvut.cz/dataset/Stats)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "Engine(mysql+pymysql://guest:***@relational.fit.cvut.cz)"
+      ]
+     },
+     "execution_count": 4,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "engine = create_engine('mysql+pymysql://guest:relational@relational.fit.cvut.cz')\n",
+    "engine"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -51,10 +71,177 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
+   "execution_count": 5,
+   "metadata": {
+    "scrolled": true
+   },
+   "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": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "users = pd.read_sql_query('SELECT * FROM stats.users', engine)\n",
+    "users.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -65,10 +252,175 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "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>userId</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": [
+       "   userId  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": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "users.rename(columns={'Id': 'userId'}, inplace = True)\n",
+    "users.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -81,8 +433,232 @@
    "cell_type": "code",
    "execution_count": 7,
    "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": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "posts = pd.read_sql_query('SELECT * FROM stats.posts', engine)\n",
+    "posts.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -93,10 +669,235 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 9,
    "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",
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+       "\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",
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+       "      <th>Title</th>\n",
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+       "      <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": [
+       "   PostId  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  userId  \\\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": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "posts.rename(columns={'Id': 'PostId'}, inplace = True)\n",
+    "posts.rename(columns={'OwnerUserId':'userId'}, inplace = True)\n",
+    "posts.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -109,10 +910,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 10,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "newusers = users[['userId','Reputation','Views','UpVotes','DownVotes']]\n",
+    "newposts = posts[['PostId', 'Score', 'userId', 'ViewCount', 'CommentCount']]"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -127,7 +931,9 @@
    "execution_count": 11,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "Both = newusers.merge(newposts)"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -138,10 +944,33 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 12,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "userId              0\n",
+       "Reputation          0\n",
+       "Views               0\n",
+       "UpVotes             0\n",
+       "DownVotes           0\n",
+       "PostId              0\n",
+       "Score               0\n",
+       "ViewCount       48396\n",
+       "CommentCount        0\n",
+       "dtype: int64"
+      ]
+     },
+     "execution_count": 12,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "Both\n",
+    "Both.isnull().sum()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -153,10 +982,131 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 13,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
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+       "    .dataframe thead th {\n",
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+       "</style>\n",
+       "<table border=\"1\" class=\"dataframe\">\n",
+       "  <thead>\n",
+       "    <tr style=\"text-align: right;\">\n",
+       "      <th></th>\n",
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+       "      <th>UpVotes</th>\n",
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+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
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+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>-1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>0</td>\n",
+       "      <td>5007</td>\n",
+       "      <td>1920</td>\n",
+       "      <td>8981</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>-1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>0</td>\n",
+       "      <td>5007</td>\n",
+       "      <td>1920</td>\n",
+       "      <td>8982</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "   userId  Reputation  Views  UpVotes  DownVotes  PostId  Score  ViewCount  \\\n",
+       "0      -1           1      0     5007       1920    2175      0        0.0   \n",
+       "1      -1           1      0     5007       1920    8576      0        0.0   \n",
+       "2      -1           1      0     5007       1920    8578      0        0.0   \n",
+       "3      -1           1      0     5007       1920    8981      0        0.0   \n",
+       "4      -1           1      0     5007       1920    8982      0        0.0   \n",
+       "\n",
+       "   CommentCount  \n",
+       "0             0  \n",
+       "1             0  \n",
+       "2             0  \n",
+       "3             0  \n",
+       "4             0  "
+      ]
+     },
+     "execution_count": 13,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "Both[['ViewCount']] = Both [['ViewCount']].fillna(0)\n",
+    "Both.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -167,10 +1117,33 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 14,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "userId          int64\n",
+       "Reputation      int64\n",
+       "Views           int64\n",
+       "UpVotes         int64\n",
+       "DownVotes       int64\n",
+       "PostId          int64\n",
+       "Score           int64\n",
+       "ViewCount       int64\n",
+       "CommentCount    int64\n",
+       "dtype: object"
+      ]
+     },
+     "execution_count": 14,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "Both['ViewCount'] = Both['ViewCount'].astype('int64')\n",
+    "Both.dtypes"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -196,7 +1169,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.5"
+   "version": "3.6.7"
   }
  },
  "nbformat": 4,
diff --git a/your-code/main.ipynb b/your-code/main.ipynb
index 31724c5..d8fdd82 100644
--- a/your-code/main.ipynb
+++ b/your-code/main.ipynb
@@ -9,10 +9,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "import pandas as pd"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -23,24 +25,42 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "import pymysql\n",
+    "import sqlalchemy\n",
+    "from sqlalchemy import create_engine"
+   ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "#### 3. Create a mysql engine to set the connection to the server. Check the connection details in [this link](https://relational.fit.cvut.cz/search?tableCount%5B%5D=0-10&tableCount%5B%5D=10-30&dataType%5B%5D=Numeric&databaseSize%5B%5D=KB&databaseSize%5B%5D=MB)"
+    "#### 3. Create a mysql engine to set the connection to the server. Check the connection details in [this link](https://relational.fit.cvut.cz/dataset/Stats)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "Engine(mysql+pymysql://guest:***@relational.fit.cvut.cz)"
+      ]
+     },
+     "execution_count": 4,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "engine = create_engine('mysql+pymysql://guest:relational@relational.fit.cvut.cz')\n",
+    "engine"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -51,10 +71,177 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
+   "execution_count": 5,
+   "metadata": {
+    "scrolled": true
+   },
+   "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": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "users = pd.read_sql_query('SELECT * FROM stats.users', engine)\n",
+    "users.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -65,10 +252,175 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "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>userId</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": [
+       "   userId  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": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "users.rename(columns={'Id': 'userId'}, inplace = True)\n",
+    "users.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -81,8 +433,232 @@
    "cell_type": "code",
    "execution_count": 7,
    "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",
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+       "      <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": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "posts = pd.read_sql_query('SELECT * FROM stats.posts', engine)\n",
+    "posts.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -93,10 +669,235 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 9,
    "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>PostId</th>\n",
+       "      <th>PostTypeId</th>\n",
+       "      <th>AcceptedAnswerId</th>\n",
+       "      <th>CreaionDate</th>\n",
+       "      <th>Score</th>\n",
+       "      <th>ViewCount</th>\n",
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+       "      <th>Title</th>\n",
+       "      <th>...</th>\n",
+       "      <th>AnswerCount</th>\n",
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+       "      <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": [
+       "   PostId  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  userId  \\\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": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "posts.rename(columns={'Id': 'PostId'}, inplace = True)\n",
+    "posts.rename(columns={'OwnerUserId':'userId'}, inplace = True)\n",
+    "posts.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -109,10 +910,13 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 10,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "newusers = users[['userId','Reputation','Views','UpVotes','DownVotes']]\n",
+    "newposts = posts[['PostId', 'Score', 'userId', 'ViewCount', 'CommentCount']]"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -127,7 +931,9 @@
    "execution_count": 11,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "Both = newusers.merge(newposts)"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -138,10 +944,33 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 12,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "userId              0\n",
+       "Reputation          0\n",
+       "Views               0\n",
+       "UpVotes             0\n",
+       "DownVotes           0\n",
+       "PostId              0\n",
+       "Score               0\n",
+       "ViewCount       48396\n",
+       "CommentCount        0\n",
+       "dtype: int64"
+      ]
+     },
+     "execution_count": 12,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "Both\n",
+    "Both.isnull().sum()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -153,10 +982,131 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 13,
    "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>userId</th>\n",
+       "      <th>Reputation</th>\n",
+       "      <th>Views</th>\n",
+       "      <th>UpVotes</th>\n",
+       "      <th>DownVotes</th>\n",
+       "      <th>PostId</th>\n",
+       "      <th>Score</th>\n",
+       "      <th>ViewCount</th>\n",
+       "      <th>CommentCount</th>\n",
+       "    </tr>\n",
+       "  </thead>\n",
+       "  <tbody>\n",
+       "    <tr>\n",
+       "      <th>0</th>\n",
+       "      <td>-1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>0</td>\n",
+       "      <td>5007</td>\n",
+       "      <td>1920</td>\n",
+       "      <td>2175</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>1</th>\n",
+       "      <td>-1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>0</td>\n",
+       "      <td>5007</td>\n",
+       "      <td>1920</td>\n",
+       "      <td>8576</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>2</th>\n",
+       "      <td>-1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>0</td>\n",
+       "      <td>5007</td>\n",
+       "      <td>1920</td>\n",
+       "      <td>8578</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>3</th>\n",
+       "      <td>-1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>0</td>\n",
+       "      <td>5007</td>\n",
+       "      <td>1920</td>\n",
+       "      <td>8981</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "      <th>4</th>\n",
+       "      <td>-1</td>\n",
+       "      <td>1</td>\n",
+       "      <td>0</td>\n",
+       "      <td>5007</td>\n",
+       "      <td>1920</td>\n",
+       "      <td>8982</td>\n",
+       "      <td>0</td>\n",
+       "      <td>0.0</td>\n",
+       "      <td>0</td>\n",
+       "    </tr>\n",
+       "  </tbody>\n",
+       "</table>\n",
+       "</div>"
+      ],
+      "text/plain": [
+       "   userId  Reputation  Views  UpVotes  DownVotes  PostId  Score  ViewCount  \\\n",
+       "0      -1           1      0     5007       1920    2175      0        0.0   \n",
+       "1      -1           1      0     5007       1920    8576      0        0.0   \n",
+       "2      -1           1      0     5007       1920    8578      0        0.0   \n",
+       "3      -1           1      0     5007       1920    8981      0        0.0   \n",
+       "4      -1           1      0     5007       1920    8982      0        0.0   \n",
+       "\n",
+       "   CommentCount  \n",
+       "0             0  \n",
+       "1             0  \n",
+       "2             0  \n",
+       "3             0  \n",
+       "4             0  "
+      ]
+     },
+     "execution_count": 13,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "Both[['ViewCount']] = Both [['ViewCount']].fillna(0)\n",
+    "Both.head()"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -167,10 +1117,33 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 14,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "userId          int64\n",
+       "Reputation      int64\n",
+       "Views           int64\n",
+       "UpVotes         int64\n",
+       "DownVotes       int64\n",
+       "PostId          int64\n",
+       "Score           int64\n",
+       "ViewCount       int64\n",
+       "CommentCount    int64\n",
+       "dtype: object"
+      ]
+     },
+     "execution_count": 14,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "Both['ViewCount'] = Both['ViewCount'].astype('int64')\n",
+    "Both.dtypes"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -196,7 +1169,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.5"
+   "version": "3.6.7"
   }
  },
  "nbformat": 4,