pandas.core.groupby.DataFrameGroupBy.sem#

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

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

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

Parameters
ddofint, default 1

Degrees of freedom.

numeric_onlybool, default True

Include only float, int or boolean data.

New in version 1.5.0.

Returns
Series or DataFrame

Standard error of the mean of values within each group.

See also

Series.groupby

Apply a function groupby to a Series.

DataFrame.groupby

Apply a function groupby to each row or column of a DataFrame.