How to calculate Standard Deviation?

Question

How to calculate Standard Deviation?Thanks!

Answer 1

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SD eual to the square root of the variance, whereas variance equal to the average of the squared differences between data points and the mean.

2007-09-14 18:21:55 補充：

i mean SD equal to the square root of the variance, whereas variance equal to the average of the squared differences between data points and the mean.

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