pandas.core.window.Expanding.var

Expanding.var(ddof=1, **kwargs)

expanding variance

Parameters:

ddof : int, default 1

Delta Degrees of Freedom. The divisor used in calculations is N - ddof, where N represents the number of elements.

Returns:

same type as input

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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.Expanding.var.html