關於sample variance 的問題,請幫忙

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Kan

2006-11-07 5:56 pm

Is it possible for the sample variance to be 0 or negative? Why or why not?

回答 (1)

Old Soul

2006-11-07 6:26 pm

✔ 最佳答案

variance can be zero, if there is all sample are identical, i.e. no variation
variance cannot be negative, because variance is square of variation

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