[New-bugs-announce] [issue40855] statistics.stdev ignore xbar argument

[Matti]

New submission from Matti <matti.jansson at fysik.su.se>:

statistics.variance also has the same problem. 

>>> import statistics
>>> statistics.stdev([1,2])
0.7071067811865476
>>> statistics.stdev([1,2], 3)
0.7071067811865476
>>> statistics.stdev([1,2], 1.5)
0.7071067811865476

should be 
0.7071067811865476
2.23606797749979
0.5

----------
messages: 370659
nosy: Folket
priority: normal
severity: normal
status: open
title: statistics.stdev ignore xbar argument
type: behavior
versions: Python 3.6

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40855>
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