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bpo-40855: Fix ignored mu and xbar parameters (GH-20835) (#GH-20862)

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Miss Islington (bot) 2020-06-13 16:56:15 -07:00 • committed by GitHub
parent bda4cc82de
commit 55c1d21761
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3 changed files with 18 additions and 2 deletions
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6
Lib/statistics.py
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@ -682,8 +682,10 @@ def _ss(data, c=None):
calculated from ``c`` as given. Use the second case with care, as it can
lead to garbage results.
"""
if c is None:
c = mean(data)
if c is not None:
T, total, count = _sum((x-c)**2 for x in data)
return (T, total)
c = mean(data)
T, total, count = _sum((x-c)**2 for x in data)
# The following sum should mathematically equal zero, but due to rounding
# error may not.