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Because when you mix a lot of random variables together, the variance tends to decrease.
by glimcat 15y ago
Because when you mix a lot of random variables together, the variance tends to decrease.
- lkozma 15y agoExactly, and the variance of the maximum will decrease even faster than the variance of the mean.
- sebkomianos 15y agoThis is very interesting, can you point me/us to any explanations about it?
- shabble 15y agoI'd guess at the http://en.wikipedia.org/wiki/Central_limit_theorem http://en.wikipedia.org/wiki/Central_limit_theorem - Combined distributions tend towards Gaussian (bell-curve)