Re:Statistics for Hackers
by solomatov on Sunday September 20, 2015 @01:57PM
(#10248364)
> For that matter, due to the Central Limit Theorem, neither do analytic approximations like a t-test for comparing different group means.
Actually, it doesn't. You need a confidence interval, and central limit theorem doesn't give you a confidence interval. It just says that the distribution is close enough to normal at some point. In some cases, it might take a very large n before it become close to normal.
Re:Statistics for Hackers
by stdbrouw on Sunday September 20, 2015 @05:26PM
(#10249200)
And exactly how long it will take for the approximation to reach a certain level of accuracy can be ascertained by using the other technique mentioned in the slide deck: run a simulation. And so we have come full circle :-)
Actually, it doesn't. You need a confidence interval, and central limit theorem doesn't give you a confidence interval. It just says that the distribution is close enough to normal at some point. In some cases, it might take a very large n before it become close to normal.