https://github.com/python/cpython/commit/219b1f9d1d97e271213fe324b94ed544e890630b
commit: 219b1f9d1d97e271213fe324b94ed544e890630b
branch: main
author: Raymond Hettinger <rhettin...@users.noreply.github.com>
committer: rhettinger <rhettin...@users.noreply.github.com>
date: 2025-04-28T23:05:37-05:00
summary:
gh-132893: Minor edits to the statistics module PR (gh-133106)
files:
M Lib/statistics.py
M Misc/NEWS.d/next/Library/2025-04-24-21-22-46.gh-issue-132893.KFuxZ2.rst
diff --git a/Lib/statistics.py b/Lib/statistics.py
index 9dcb20d2a485eb..3d805cb073987d 100644
--- a/Lib/statistics.py
+++ b/Lib/statistics.py
@@ -810,8 +810,7 @@ def deco(builder):
@register('normal', 'gauss')
def normal_kernel():
sqrt2pi = sqrt(2 * pi)
- sqrt2 = sqrt(2)
- neg_sqrt2 = -sqrt2
+ neg_sqrt2 = -sqrt(2)
pdf = lambda t: exp(-1/2 * t * t) / sqrt2pi
cdf = lambda t: 1/2 * erfc(t / neg_sqrt2)
invcdf = lambda t: _normal_dist_inv_cdf(t, 0.0, 1.0)
diff --git
a/Misc/NEWS.d/next/Library/2025-04-24-21-22-46.gh-issue-132893.KFuxZ2.rst
b/Misc/NEWS.d/next/Library/2025-04-24-21-22-46.gh-issue-132893.KFuxZ2.rst
index 1ef651188e04bc..1f5a48982635c0 100644
--- a/Misc/NEWS.d/next/Library/2025-04-24-21-22-46.gh-issue-132893.KFuxZ2.rst
+++ b/Misc/NEWS.d/next/Library/2025-04-24-21-22-46.gh-issue-132893.KFuxZ2.rst
@@ -1 +1 @@
-Improved the accuracy of ``statistics.NormalDist.cdf`` for negative inputs.
+Improved :meth:`statistics.NormalDist.cdf` accuracy for inputs smaller than
the mean.
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