Conover-Iman Test of Multiple Comparisons Using Rank Sums R package conover.test version 1.1.7 Computes the Conover-Iman test (1979) for 0th-order stochastic dominance and reports the results among multiple pairwise comparisons after a Kruskal-Wallis omnibus test for i0th-order stochastic dominance among k groups (Kruskal and Wallis, 1952). conover.test makes k(k-1)/2 multiple pairwise comparisons based on Conover-Iman t-test-statistic of the rank differences. The null hypothesis for each pairwise comparison is that the probability of observing a randomly selected value from the first group that is larger than a randomly selected value from the second group equals one half; this null hypothesis corresponds to that of the Wilcoxon-Mann-Whitney rank-sum test. Like the rank-sum test, if the data can be assumed to be continuous, and the distributions are assumed identical except for a difference in location, Conover-Iman test may be understood as a test for median difference and for mean difference. conover.test accounts for tied ranks. The Conover-Iman test is strictly valid if and only if the corresponding Kruskal-Wallis null hypothesis is rejected. Software Imports: rlang Alexis Dinno <alexis.dinno@pdx.edu> Comprehensive R Archive Network (CRAN) Alexis Dinno [aut, cre, cph] (ORCID: <https://orcid.org/0000-0003-2560-310X>) GPL-2 2026-02-12 application/tgz https://CRAN.R-project.org/package=conover.test doi:10.32614/CRAN.package.conover.test