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In Mathematica there is a function StandardDeviation used to calculate the sample standard deviation. I want to know if there is a function to calculate the population standard deviation. From this book, it seems there is a function StandardDeviationMLE in older versions of Mathematica, which I can't find in Mathematica 11. I want to know if this function still exists in the newer versions of Mathematica. Thanks guys in advance.

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StandardDeviationMLE is defined in the documentation:

StandardDeviationMLE[data_] := 
 StandardDeviation[data] Sqrt[(Length[data] - 1)/Length[data]]
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