← All reports

The R programming language has implemented bug fixes to correct p-value computations in the wilcox.test function.

Software DevelopmentStatisticsProgramming LanguagesOct 20, 2026score 0.174 posts · 0 replies across 1 instances
The posts announce bug fixes in the R programming language versions 4.6.1 and 4.6.2. Specifically, they address p-value computation errors in the 'wilcox.test' function, including missing factors and numerical cancellation issues near boundaries.

Claims

The R programming language has implemented bug fixes to correct p-value computations in the wilcox.test function.
Parent: Software DevelopmentEntity: R programming languageSub-entity: wilcox.test functionImpact: positiveDate: Oct 20, 2026Target: R programming language bug fixes

Source posts

@[email protected]
Changes in R 4.6.1 Bug Fixes: ‘wilcox.test(x, exact=FALSE, correct = k)’'s p-value computation got a missing ‘dnorm(z)’ factor, and so did the 2-sample case, in addition to more fixes. Further, if ‘wilcox.test(.., exact=TRUE)’'s p-value is close to the 0 or 1 boundaries, the calculation no longer suffers severely from cancellation, thanks to Tasuku Kobayashi's reports and Ahmed Sattar Jabbar's suggestion in PR#19144. https://developer.r-project.org/blosxom.cgi/R-devel/NEWS/2026/10/20
0 boosts · 0 favs · 0 replies · Oct 20, 2026
@[email protected]
Changes in R 4.6.2 Bug Fixes: If ‘wilcox.test(..., exact=TRUE)’'s p-value is close to the 0 or 1 boundaries, the calculation no longer suffers severely from cancellation, thanks to Tasuku Kobayashi's reports and Ahmed Sattar Jabbar's suggestion in PR#19144. https://developer.r-project.org/blosxom.cgi/R-devel/NEWS/2026/10/20
0 boosts · 0 favs · 0 replies · Oct 20, 2026
@[email protected]
Changes in R 4.6.1 Bug Fixes: ‘wilcox.test(x, exact=FALSE, correct = k)’'s p-value computation got a missing ‘dnorm(z)’ factor, and so did the 2-sample case, in addition to more fixes. Further, if ‘wilcox.test(.., exact=TRUE)’'s p-value is close to the 0 or 1 boundaries, the calculation no longer suffers severely from cancellation, thanks to Tasuku Kobayashi's reports and Ahmed Sattar Jabbar's suggestion in PR#19144. https://developer.r-project.org/blosxom.cgi/R-4-6-branch/NEWS/2026/10/20
0 boosts · 0 favs · 0 replies · Oct 20, 2026
@[email protected]
Changes in R 4.6.2 Bug Fixes: If ‘wilcox.test(..., exact=TRUE)’'s p-value is close to the 0 or 1 boundaries, the calculation no longer suffers severely from cancellation, thanks to Tasuku Kobayashi's reports and Ahmed Sattar Jabbar's suggestion in PR#19144. https://developer.r-project.org/blosxom.cgi/R-4-6-branch/NEWS/2026/10/20
0 boosts · 0 favs · 0 replies · Oct 20, 2026