diff --git a/Doc/library/statistics.rst b/Doc/library/statistics.rst
index bc38178..26bb592 100644
--- a/Doc/library/statistics.rst
+++ b/Doc/library/statistics.rst
@@ -169,6 +169,10 @@
    This is suited for when your data is discrete, and you don't mind that the
    median may not be an actual data point.
 
+   If your data is ordinal (supports order operations) but not numeric (doesn't
+   support addition), you should use :func:`median_low` or :func:`median_high`
+   instead.
+
    .. seealso:: :func:`median_low`, :func:`median_high`, :func:`median_grouped`