# Standard deviation and sigma算法

請問關於Standard deviation(EXCEL裡的STDEV) 和 SIGMA算法的差異？！這..是一樣的東西嗎？！

### 2 Answers

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- TigerLv 51 decade agoFavorite Answer
By definition, they should be the same terms while standard deviation (sigma) is different from standard deviation (s):

A distinction is made between the standard deviation σ (sigma) of a whole population or of a random variable, and the standard deviation s of a subset-population sample.

Since my 等級 is not enough to post html page here, please refer to http://en.wikipedia.org/wiki/Standard_deviation for more details.

Source(s): from Tiger & http://en.wikipedia.org/wiki/Standard_deviation- Login to reply the answers

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