[issue20499] Rounding errors with statistics.variance

[Raymond Hettinger]

Change by Raymond Hettinger <raymond.hettinger at gmail.com>:


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nosy: +rhettinger
nosy_count: 4.0 -> 5.0
pull_requests: +26650
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/28230

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue20499>
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