pandas.core.groupby.GroupBy.std

GroupBy.std(self, ddof=1, *args, **kwargs)

Compute standard deviation of groups, excluding missing values.

For multiple groupings, the result index will be a MultiIndex.

Parameters:

ddof : integer, default 1

degrees of freedom

Returns:

Series or DataFrame

Standard deviation of values within each group.

See also

Series.groupby

DataFrame.groupby