Date: Mar 23, 2011 11:34 PM
Author: Steven D'Aprano
Subject: Re: Expectation of the variance
On Wed, 23 Mar 2011 15:28:51 -0700, Ray Vickson wrote:
> I think that the OP's problem stems from trying to use the formulas
> where they do not apply. He does not have an iid sample, because the
> only combinations he looks at are those in which there are no
> repetitions; that is, he is sampling *without replacement* (he does not
> allow things like (1,1,1); he only allows things like (1,2,3).) That
> makes his successive sample values dependent instead of independent, so
> the formulas he cites (which assume _independence_) do not apply.
Ahaha! That's what I'm missing, thanks.
Works fine once I swap to sampling with replacement instead.