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standard deviation
Message posted by michisaiah (via 206.111.26.33) on November 19, 2001 at 4:30 PM (ET)
under what condition can a
negative standard deviation be calculated.
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Re: standard deviation
Message posted by Jack Tomsky (via 208.249.113.130) on November 26, 2001 at 1:05 PM (ET)
A negative variance can be calculated sometimes when using the method of moments. It is possible for this unbiased estimator to yield negative variance estimates. Since a negative variance is outside the admissible range, such estimates are usually truncated to zero.
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