From b478686a21f2f48a1632757a3107029e4c7e73f5 Mon Sep 17 00:00:00 2001
From: alinde1 <32714875+alinde1@users.noreply.github.com>
Date: Tue, 6 Mar 2018 22:47:45 +0100
Subject: [PATCH] DOC: is confusing for ddof parameter of sem, var and std
 functions (#19986)

---
 pandas/core/generic.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pandas/core/generic.py b/pandas/core/generic.py
index a45887543dc537..e34fe606be7596 100644
--- a/pandas/core/generic.py
+++ b/pandas/core/generic.py
@@ -7766,7 +7766,8 @@ def _doc_parms(cls):
     If the axis is a MultiIndex (hierarchical), count along a
     particular level, collapsing into a %(name1)s
 ddof : int, default 1
-    degrees of freedom
+    Delta Degrees of Freedom. The divisor used in calculations is N - ddof,
+    where N represents the number of elements.
 numeric_only : boolean, default None
     Include only float, int, boolean columns. If None, will attempt to use
     everything, then use only numeric data. Not implemented for Series.