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boehnke
2012 Feb 19
3
Non-parametric test for repeated measures and post-hoc single comparisons in R?
...1:7, 17*6, repl=T ),
nrow = 17, byrow = TRUE,
dimnames = list(1:17, paste( 'T', 1:6, sep='' ))
)
I found the Friedman test and the Quade test for testing the overall
hypothesis.
friedman.test( x )
quade.test( x )
However, the R help files, my text books (Bortz, Lienert and Boehnke,
2008; K?hler, Schachtel and Voleske, 2007; both German), and the
Wikipedia texts differ in what they propose as requirements for the
tests. R says that data need to be unreplicated. I read 'unreplicated'
as 'not-repeated', but is that right? If so, the example, in contrast,
i...
2006 Aug 25
1
exact Wilcoxon signed rank test with ties and the "no longer under development" exactRanksumTests package
...ate the exact values with ties.
Is there any other package that is providing a similiar test? Or is
there an easy work out how to take the ties into account? (Or a chance
that the correction is taken into account for the stats package?)
Stefan Grosse
Take the following example from Bortz/Lienert/Boehnke:
> x1<-c(9,14,8,11,14,10,8,14,12,14,13,9,15,12,9)
> x2<-c(13,15,9,12,16,10,8,13,12,16,9,10,16,12,9)
# exactRankTests package:
> wilcox.exact(x1,x2,paired=TRUE)
Exact Wilcoxon signed rank test
data: x1 and x2
V = 13, p-value = 0.1367
alternative hypothesis: true mu is n...