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    Missing post. Moderator help?

    Hi admins and moderators, thanks for this forum. I think I need help. Two days ago I tried to leave a reply to Hans Rudel's thread "Sample distribution of means and the minimum number of samples/population size" in the elementary statistics forum. I think it said my post needed to be...
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    Why is the mean of sample variances not equal to the population variance?

    Several texts say that the mean of all values of an unbiased estimator is equal to the parameter it is estimating. They also say that the sample variance using Bessel's correction is an unbiased estimator of the population variance. Here's what I'm confused about: Consider a population...