From: Siegfried.Macho Dear R-helpers, 3 questions: 1. Is there a package that contains a routine for computing Kendall's W (coefficient of concordance), with and without ties ?
Is that the same as Kendall's tau, as in cor(..., method="kendall")?
2. Is there a package that contains a routine for computing Goodman' s Gamma.
Don't know, if you can find out by search on CRAN.
3. I there a simple method for computing the number of ties as well as their lengths within a vector fo ranks, e.g.
>r1 <- rank(c(1, 3, 2, 3, 3, 2, 4))
gives: [1] 1.0 5.0 2.5 5.0 5.0 2.5 7.0 which contains 2 ties with length 2 and 3.
Try table(), which gives you frequencies. HTH, Andy
Thanks in advance, S.M ============================================== Dr. Siegfried Macho Department of Psychology University of Fribourg Rue de Faucigny 2 CH-1700 Fribourg Tel.: +41-26-3007635 Fax.: +41-26-3009712 http://www.unifr.ch/psycho/general/macho.htm
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