Dataset: shirt_tip2.csv

Source: N. Gueguen and C. Jacob (2014). "Clothing Color and Tipping:
Gentlemen Patrons Give More Tips to Waitresses with Red Clothes,"
Journal of Hospitality & Tourism Research, Vol. 38, #2, pp. 275-280.

Description: Results of a field experiment in France to relate incidence
of tipping (they have a mandatory service fee) to gender of customer
and color of waitresses' t-shirt (Black, White, Red, Yellow, Green, Blue) 

Variable Names
ID
cust.gend    (1=Male, 2=Female)
hair.color   (1=Black, 2=White, 3=Red, 4=Yellow, 5=Blue, 6=Green)
tip01        (1=Yes, 0=No)