pandas.core.window.EWM.var
EWM.var(bias=False, **kwargs)-
exponential weighted moving variance
Parameters: bias : boolean, default False
Use a standard estimation bias correction
Returns: same type as input
See also
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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/0.18.1/generated/pandas.core.window.EWM.var.html