From ec8d3adb99f1ad93786fed5c1def5119b6ec73c0 Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <rhettinger@users.noreply.github.com>
Date: Tue, 3 May 2022 03:41:46 -0500
Subject: The stdev calculation is more accurate computing its own mean
 (#92220)

---
 Lib/statistics.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'Lib')

diff --git a/Lib/statistics.py b/Lib/statistics.py
index f3bc9a1f346..6e6d62c4a0e 100644
--- a/Lib/statistics.py
+++ b/Lib/statistics.py
@@ -1173,8 +1173,7 @@ class NormalDist:
         "Make a normal distribution instance from sample data."
         if not isinstance(data, (list, tuple)):
             data = list(data)
-        xbar = fmean(data)
-        return cls(xbar, stdev(data, xbar))
+        return cls(mean(data), stdev(data))
 
     def samples(self, n, *, seed=None):
         "Generate *n* samples for a given mean and standard deviation."
-- 
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