The Three Unexplained Mysteries of Taxi Tipping Behavior

Photograph by Afton Almaraz/Getty Images

With a bit of analytical effort, you can crunch the numbers from 100 million New York City taxi rides to pinpoint how passengers tip their drivers. You can even figure out how many miserly yellow cab riders leave no tip at all. But sometimes the data doesn’t quite make sense no matter how you scrutinize it.

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