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Next time you flip a coin you might want to pick the side that's already facing up

LEILA FADEL, HOST:

Good morning. I'm Leila Fadel.

Next time you flip a coin, you might want to pick the side that's already facing up. A recent University of Amsterdam study says that flipped coins have what's called a same-side bias. The study flipped coins in 46 different currencies 350,000 times and registered that 51% of the time the coins landed on the side they started on. The research could upend ideas about the fairness of flipping a coin. I guess you could always draw straws.

It's MORNING EDITION. Transcript provided by NPR, Copyright NPR.

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