DataFrameGroupBy.sem(ddof=1, numeric_only=False)[source]#

Compute standard error of the mean of groups, excluding missing values.

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

ddofint, default 1

Degrees of freedom.

numeric_onlybool, default False

Include only float, int or boolean data.

New in version 1.5.0.

Changed in version 2.0.0: numeric_only now defaults to False.

Series or DataFrame

Standard error of the mean of values within each group.