A variation on the birthday paradox
July 14, 2010 5:32 PM Subscribe
I have 232 facebook friends, and six of them share a birthday in common (not 6 different pairs of people on the same birthday, but 6 out of the 232 were born on the 17th of July. Now, I know it only takes 23 random people to get a 50% chance of at least ONE birthday collision, but how the heck do I figure out the odds on this one? Is this a significant anomaly, or reasonably expected? My one stats class was entirely too long ago....
posted by um_maverick to education (25 answers total) 3 users marked this as a favorite