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.float64
dtype.
See also
pandas.Series.ewm
Calling ewm with Series data.
pandas.DataFrame.ewm
Calling ewm with DataFrames.
pandas.Series.std
Aggregating std for Series.
pandas.DataFrame.std
Aggregating std for DataFrame.