pandas.core.window.ewm.ExponentialMovingWindow.std¶
- ExponentialMovingWindow.std(bias=False, *args, **kwargs)[source]¶
Calculate the ewm (exponential weighted moment) standard deviation.
- Parameters
- biasbool, default False
Use a standard estimation bias correction.
- *args
For NumPy compatibility and will not have an effect on the result.
- **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
pandas.Series.ewmCalling ewm with Series data.
pandas.DataFrame.ewmCalling ewm with DataFrames.
pandas.Series.stdAggregating std for Series.
pandas.DataFrame.stdAggregating std for DataFrame.