pairwise.wilcox.test          package: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()

