dask.dataframe.rolling.Rolling.skew

dask.dataframe.rolling.Rolling.skew

Rolling.skew()[source]

Calculate the rolling unbiased skewness.

This docstring was copied from pandas.core.window.rolling.Rolling.skew.

Some inconsistencies with the Dask version may exist.

Parameters
numeric_onlybool, default False (Not supported in Dask)

Include only float, int, boolean columns.

New in version 1.5.0.

Returns
Series or DataFrame

Return type is the same as the original object with np.float64 dtype.

See also

scipy.stats.skew

Third moment of a probability density.

pandas.Series.rolling

Calling rolling with Series data.

pandas.DataFrame.rolling

Calling rolling with DataFrames.

pandas.Series.skew

Aggregating skew for Series.

pandas.DataFrame.skew

Aggregating skew for DataFrame.

Notes

A minimum of three periods is required for the rolling calculation.

Examples

>>> ser = pd.Series([1, 5, 2, 7, 15, 6])  
>>> ser.rolling(3).skew().round(6)  
0         NaN
1         NaN
2    1.293343
3   -0.585583
4    0.670284
5    1.652317
dtype: float64

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