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Re: var(x) and std(x)
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From: |
Francesco Potorti` |
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Subject: |
Re: var(x) and std(x) |
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Date: |
Tue, 12 Nov 2002 18:03:39 +0100 |
> It gives variance after averaging over n-1 samples, rather than
> averaging over n samples
If you compute the mean from the samples, this is correct. If you know
the mean a priori, then you should divide by n. The code you cite
computes the mean from the samples, so that's okay.
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