DOC: Series reduction return value descriptions (pandas-dev#59171)

Author: lukemanley

pandas/core/series.py

@@ -6567,7 +6567,7 @@ def min(
         Returns
         -------
         scalar or Series (if level specified)
-            The maximum of the values in the Series.
+            The minimum of the values in the Series.
 
         See Also
         --------
@@ -6716,7 +6716,7 @@ def sum(
         Returns
         -------
         scalar or Series (if level specified)
-            Median of the values for the requested axis.
+            Sum of the values for the requested axis.
 
         See Also
         --------
@@ -6826,7 +6826,7 @@ def mean(
         Returns
         -------
         scalar or Series (if level specified)
-            Median of the values for the requested axis.
+            Mean of the values for the requested axis.
 
         See Also
         --------