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pandas.core.window.Expanding.std

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

expanding standard deviation

Parameters:

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

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

See also

© 2011–2012 Lambda Foundry, Inc. and PyData Development Team
© 2008–2011 AQR Capital Management, LLC
© 2008–2014 the pandas development team
Licensed under the 3-clause BSD License.
http://pandas.pydata.org/pandas-docs/version/0.18.1/generated/pandas.core.window.Expanding.std.html