Raymond> The module focuses on everyday data reduction functions and
Raymond> omits more sophisticated statistical tools.
...
Raymond> __all__ = ['mean', 'stddev', 'product', 'nlargest',
Raymond> 'nsmallest', 'select']
Raymond
It's been years since I last looked at a statistics book or thought much
about statistics, but I think the standard deviation was generally defined
as the square root of the variance. Perhaps you could easily add the
variance to your collection of functions by renaming "stddev" to "variance",
remove the "** 0.5" from the return statements, then define stddev as
def stddev(data, sample=True):
return variance(data, sample) ** 0.5
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