Tip Joke

Description

Effect of a waiter leaving a joke or an advertisement on getting a tip

Format

A dataset with 211 observations on the following 5 variables.

Card	Type of card used: Ad, Joke, or None
Tip	1=customer left a tip or 0=no tip
Ad	Indicator for Ad card
Joke	Indicator for Joke card
None	Indicator for no card

Details

Can telling a joke affect whether or not a waiter in a coffee bar receives a tip from a customer? A study investigated this question at a coffee bar at a famous resort on the west coast of France. The waiter randomly assigned coffee-ordering customers to one of three groups: When receiving the bill one group also received a card telling a joke, another group received a card containing an advertisement for a local restaurant, and a third group received no card at all. He recorded whether or not each customer left a tip.

Write a Python script named that reads the file TipJoke.csv. The output of the script should print out a table of the form

Type Total Percent

Ad ? ?

Joke ? ?

None ? ?

where the Total column contains the number of entries of the specified card type and the Percent column contains the percentage of tips given for the specified card type with two decimal places of precision. Data from the .csv file is found below, note their are many more than this

	Card	Tip	Ad	Joke	None
1	None	1	0	0	1
2	Joke	1	0	1	0
3	Ad	0	1	0	0
4	None	0	0	0	1
5	None	1	0	0	1
6	None	0	0	0	1
7	Ad	0	1	0	0
8	Ad	0	1	0	0
9	None	0	0	0	1
10	None	0	0	0	1
11	None	1	0	0	1
12	Ad	0	1	0	0
13	None	0	0	0	1