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DOC: Clarify definition of kurtosis used #9437

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merged 1 commit into from
Feb 10, 2015

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bashtage
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@bashtage bashtage commented Feb 6, 2015

Added explation that kurtosis returned is Fisher's kurtosis, also
known as excess kurtosis.

Also cleans up the kurtosis function to remove some unused computations.

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bashtage commented Feb 6, 2015

Trivial PR to better explain how kurtosis is computed. When checking the calculation, I noticed 2 lines that were unused to also removes those.

'Return unbiased kurtosis over requested axis\nNormalized by N-1',
'Return unbiased kurtosis over requested axis using Fisher''s '
'definition of\nkurtosis (kurtosis of normal == 0.0). Normalized '
'by N-1\n'',
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this line is a syntax error

Added explation that kurtosis returned is Fisher's kurtosis, also
known as excess kurtosis.

Also cleans up the kurtosis function to remove some unused computations.
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bashtage commented Feb 6, 2015

Indeed on the first use of C.

@jreback jreback added Docs Numeric Operations Arithmetic, Comparison, and Logical operations labels Feb 10, 2015
@jreback jreback added this to the 0.16.0 milestone Feb 10, 2015
jreback added a commit that referenced this pull request Feb 10, 2015
DOC: Clarify definition of kurtosis used
@jreback jreback merged commit 09a8437 into pandas-dev:master Feb 10, 2015
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jreback commented Feb 10, 2015

@bashtage thanks

@bashtage bashtage deleted the doc-kurtosis branch June 4, 2015 20:46
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3 participants