Tim Urban of Wait But Why recently completed an informal but thorough survey of 123 New Yorkers whose work involves being tipped, including…
…waiters, bartenders, baristas, manicurists, barbers, busboys, bellmen, valets, doormen, cab drivers, restaurant delivery people, and even some people who don’t get tipped but I’m not sure why, like acupuncturists and dental hygienists.
Here are the statistical results of his research…

Would you say that his findings are about what you’d expect in your area, too?
(Also, be sure to see his full post for an entertaining and in-depth look at these results.)