pandas.core.groupby.GroupBy.sem

final GroupBy.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.