conover.test: Conover-Iman Test of Multiple Comparisons Using Rank Sums

Computes the Conover-Iman test (1979) for stochastic dominance and reports the results among multiple pairwise comparisons after a Kruskal-Wallis test for stochastic dominance among k groups (Kruskal and Wallis, 1952). The interpretation of stochastic dominance requires an assumption that the CDF of one group does not cross the CDF of the other. 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. 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.

AuthorAlexis Dinno <alexis.dinno@pdx.edu>
Date of publication2017-02-09 07:01:55
MaintainerAlexis Dinno <alexis.dinno@pdx.edu>
LicenseGPL-2
Version1.1.2

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Functions

Conover-Iman test Man page
conover.test Man page
homecare Man page
p.adjustment.methods Man page

Files

conover.test
conover.test/NAMESPACE
conover.test/data
conover.test/data/homecare.rda
conover.test/R
conover.test/R/conover.test.R
conover.test/MD5
conover.test/DESCRIPTION
conover.test/man
conover.test/man/conover.test.Rd conover.test/man/homecare.Rd

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