To explore the subject matter of this section, we are going to use the tips dataset. This data was reported for the first time by Bryant, P. G. and Smith, M (1995) in Practical Data Analysis: Case Studies in Business Statistics.
We want to study the effect of the day of the week on the amount of tips at a restaurant. For this example, the different groups are the days. Notice there is no control group or treatment group. If we wish, we can arbitrarily establish one day, for example, Thursday, as the reference or control. For now, let's start the analysis by loading the dataset as a pandas DataFrame using just one line of code. If you are not familiar with pandas, the tail command is used to show the last rows of a DataFrame ...
