pairwise.wilcox.test {stats}R Documentation

Pairwise Wilcoxon rank sum tests

Description

Calculate pairwise comparisons between group levels with corrections for multiple testing.

Usage

pairwise.wilcox.test(x, g, p.adjust.method=p.adjust.methods, ...)

Arguments

x Response vector
g Grouping vector or factor
p.adjust.method Method for adjusting p values (see p.adjust)
... Additional arguments to pass to wilcox.test.

Value

Object of class "pairwise.htest"

See Also

wilcox.test, p.adjust

Examples

data(airquality)
attach(airquality)
Month <- factor(Month, labels = month.abb[5:9])
## These give warnings because of ties :
pairwise.wilcox.test(Ozone, Month)
pairwise.wilcox.test(Ozone, Month, p.adj = "bonf")
detach()
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