How many people does it take for there to be a 50% chance that a pair in the group has the same birthday?
Only 23 people.
What about a 99% chance?
Maybe even more shocking: 57 people.
This is the birthday problem, which every undergrad who's taken a stat course has seen. Steven Strogataz explains the logic and calculations. Read more in FlowingData. (Thanks, Joyce!)
Only 23 people.
What about a 99% chance?
Maybe even more shocking: 57 people.
This is the birthday problem, which every undergrad who's taken a stat course has seen. Steven Strogataz explains the logic and calculations. Read more in FlowingData. (Thanks, Joyce!)
