DOC: fix sem

Axeldnahcram · Axeldnahcram · commit 85fa90e99992 · 2024-12-02T23:19:39.000+01:00
diff --git a/pandas/core/groupby/groupby.py b/pandas/core/groupby/groupby.py
@@ -2658,6 +2658,10 @@ def sem(self, ddof: int = 1, numeric_only: bool = False) -> NDFrameT:
         Series or DataFrame
             Standard error of the mean of values within each group.
 
+        See Also
+        --------
+        DataFrame.sem : Return unbiased standard error of the mean over requested axis.
+
         Examples
         --------
         For SeriesGroupBy:
