Hello,

I've followed your link (thanks) and in the presence of ties the value of R's cor.test, method = "kendall", in package stats and kendall_tau_b in the link are the same. If you have ties, cor.test will issue a warning but that is relative to the p-value only, the reported tau, under "sample estimates" is tau-b.

See ?cor.test

Hope this helps,

Rui Barradas

Em 20-08-2012 03:16, Kota Hattori escreveu:
Hi all,

I would like to ask a question related to Kendall package. I ran Kendall
(x,y) and

saw the results. But I am not sure which tau values R reported. I have
ties in

my data set, so I want tau-b. Can anybody tell how Kendall package is

calculating tau values? I have looked at the package PDF, but I could
not find

any useful information. As long as I see from the following

link, there may not be any direct ways to calculate tau-b and tau-c.

http://stackoverflow.com/questions/2557863/measures-of-association-in-r-
kendalls-tau-b-and-tau-c

Yours,

Kota


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