Luis A. Afonso
Posts:
4,277
From:
LIsbon (Portugal)
Registered:
2/16/05
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Re: Sampling From Finite Population with Replacement
Posted:
Sep 29, 2010 7:56 AM
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When a problem is ill posed it is difficult to get what it is really asked for.
Suppose I generate data from a NORMAL MODEL N(mu, var). Considering any finite set N of values we know that, generally speaking, the sample mean, m, does not coincide with mu.
_______ mu = m + bias
This bias tends to ZERO when N grows ro infinity.
The same way in what concerns variance and its unbiased estimator, the sample variance, svar, which?s the sum of the squared deviations divided by N-1.
________ svar = var + bias´
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