Effect of a waiter leaving a joke or an advertisement on getting a tip
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 (1 =ad card left or 0 =no ad card) |
Joke |
Indicator for Joke card (1 =joke card left or 0 =no joke card) |
None |
Indicator for no card (1 =no card left or 0 =ad or joke card left) |
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.