tips incentivize to be white, young and female - there is almost no correlation between service quality and tip size: https://www.sciencedirect.com/science/art

tips incentivize to be white, young and female - there is almost no correlation between service quality and tip size: https://www.sciencedirect.com/science/article/pii/S0362331999000610 https://www.sciencedirect.com/science/article/pii/S036233199...