diff --git a/stdlib/statistics.pyi b/stdlib/statistics.pyi
index 5fa519edf..4ef950b9b 100644
--- a/stdlib/statistics.pyi
+++ b/stdlib/statistics.pyi
@@ -61,7 +61,7 @@ if sys.version_info >= (3, 11):
     def median_grouped(data: Iterable[SupportsFloat], interval: SupportsFloat = 1.0) -> float: ...
 
 else:
-    def median_grouped(data: Iterable[_NumberT], interval: _NumberT = ...) -> _NumberT | float: ...
+    def median_grouped(data: Iterable[_NumberT], interval: _NumberT | float = 1) -> _NumberT | float: ...
 
 def mode(data: Iterable[_HashableT]) -> _HashableT: ...