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DOC: Clarify definition of kurtosis used #9437

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Merged
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Feb 10, 2015
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DOC: Clarify definition of kurtosis used #9437

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4 changes: 3 additions & 1 deletion pandas/core/generic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3998,7 +3998,9 @@ def stat_func(self, axis=None, skipna=None, level=None,
nanops.nanskew)
cls.kurt = _make_stat_function(
'kurt',
'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',
nanops.nankurt)
cls.kurtosis = cls.kurt
cls.prod = _make_stat_function(
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1 change: 0 additions & 1 deletion pandas/core/nanops.py
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Expand Up @@ -511,7 +511,6 @@ def nankurt(values, axis=None, skipna=True):
D = (values ** 4).sum(axis) / count - A ** 4 - 6 * B * A * A - 4 * C * A

B = _zero_out_fperr(B)
C = _zero_out_fperr(C)
D = _zero_out_fperr(D)

if not isinstance(B, np.ndarray):
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