[issue46257] Convert statistics sum of squares to a single pass algorithm

Change by Raymond Hettinger : -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___

[issue46257] Convert statistics sum of squares to a single pass algorithm

Raymond Hettinger added the comment: New changeset 43aac29cbbb8a963a22c334b5b795d1e43417d6b by Raymond Hettinger in branch 'main': bpo-46257: Convert statistics._ss() to a single pass algorithm (GH-30403) https://github.com/python/cpython/commit/43aac29cbbb8a963a22c334b5b795d1e43417d6b

[issue46257] Convert statistics sum of squares to a single pass algorithm

Change by Raymond Hettinger : -- keywords: +patch pull_requests: +28611 stage: -> patch review pull_request: https://github.com/python/cpython/pull/30403 ___ Python tracker

[issue46257] Convert statistics sum of squares to a single pass algorithm

New submission from Raymond Hettinger : The existing code makes two passes, one to compute the mean and another to compute the sum of squared differences from the mean. A consequence of making two passes is that iterator inputs must be converted to a list before processing. This throws