After compiling data from nearly 1，000 tips left for waiters， cab drivers and hair stylists， they found that tip percentages in all three areas dropped as customers' bills went up.
After compiling data from nearly 1，000 tips left for waiters， cab drivers and hair stylists， they found that tip percentages in all three areas dropped as customers' bills went up.
通过汇总服务员、出租车司机和发型师收到的近1000份小费的数据，他们发现这三个领域中小费的比例都随着顾客帐单金额的上升而下降。