Re:Why Do Rich People Love Endurance Sports? (2017)
by Kenji on Tuesday January 29, 2019 @06:28AM
(#19025490)
> Is there a name for this sort of statistical error? Because it's everywhere.
Yes. It's called not understanding Bayes' theorem. Bayes' theorem is precisely about how the probability of "B, given A" (P[B|A]) relates to the probability of "A, given B" (P[A|B]). In our case, that would be "rich, given love for endurance sports" =/= "love for endurance sports, given rich". It is immediately obvious from Bayes' equation that the two are, in general, not the same.
Yes. It's called not understanding Bayes' theorem. Bayes' theorem is precisely about how the probability of "B, given A" (P[B|A]) relates to the probability of "A, given B" (P[A|B]). In our case, that would be "rich, given love for endurance sports" =/= "love for endurance sports, given rich". It is immediately obvious from Bayes' equation that the two are, in general, not the same.