Skew #91
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Skew #91
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Added sample skew function based on https://en.wikipedia.org/wiki/Skewness#Sample_skewness which is equivalent to what Excel uses (https://support.office.com/en-us/article/SKEW-function-bdf49d86-b1ef-4804-a046-28eaea69c9fa)
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Added
skewfunction that is based on the sample skew functions provided by Excel and suggested by Wikipedia.Old
modeskewfunction now points tonpskewfor "non-parametric skew" as a stepping stone for deprecation. I did not update theprofileorsummarymethods (which manually calculate non-parametric skew but call itmodeskew), since I'm not certain what the deprecation plan is.