pandas.core.window.expanding.Expanding.skew#
- Expanding.skew(**kwargs)[source]#
Calculate the expanding unbiased skewness.
- Parameters
- **kwargs
For NumPy compatibility and will not have an effect on the result.
- Returns
- Series or DataFrame
Return type is the same as the original object with
np.float64dtype.
See also
scipy.stats.skewThird moment of a probability density.
pandas.Series.expandingCalling expanding with Series data.
pandas.DataFrame.expandingCalling expanding with DataFrames.
pandas.Series.skewAggregating skew for Series.
pandas.DataFrame.skewAggregating skew for DataFrame.
Notes
A minimum of three periods is required for the rolling calculation.