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Definition of skewness [message #45114] Thu, 11 August 2005 15:25
envi35@yahoo.ca is currently offline  envi35@yahoo.ca
Messages: 48
Registered: March 2005
Member
Hi there,
I want to use the skewness of some data series to do a rough
classification. But I'm confused with the IDL online help about the
SKEWNESS function: Skewness determines whether a distribution is
symmetric about its MAXIMUM. While in Microsoft Excel, it says Skewness
is a characterization of the degree of asymmetry of a distribution
around its MEAN.
It seems that the MEAN is right according to the algorithm of the
skewness function in IDL, why the online help of IDL says MAXIMUM? Is
this a typo or else? Could anybody knows more about statistics give me
some help?

Thanks, Jenny

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