In the 6.3 release note, changes to the Sampling dialog are described as follows: (1) Addition of “With replacement” checkbutton (2) Addition of “Keep order” checkbutton Commit https://gerrit.libreoffice.org/c/core/+/65574 refers. Some mention of these should be added to the help files.
Confirm it. No mention there. https://help.libreoffice.org/6.4/ro/text/scalc/01/statistics.html?DbPAR=CALC#bm_id2764278
Update on file to touch https://help.libreoffice.org/7.2/en-US/text/scalc/01/statistics_sampling.html
Olivier Hallot committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/help/commit/fded06f95f73fd0bfb27d861843c2f317db83d29 tdf#132906 Update Sampling statistics dialog