pandas.core.groupby.GroupBy.sem¶
-
GroupBy.
sem
(ddof=1)[source]¶ Compute standard error of the mean 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 error of the mean of values within each group.
See also
Series.groupby
,DataFrame.groupby