Request for bug fixes #146
Description
Under section 5.
List b is defined twice (see section 4) and has to be replaced with column_names variable:
column_names = ["Score_1", "Score_2", "Score_3", "Score_4", "Score_5"]
In the last section entitled "Let's load another dataset for more exercisesº", the column header 'Chance of Admit ' of admissions dataframe comes with an extra white space. This creates potential error at filtering and slicing.