Thanks for all your reply. I am a biologist and only start to use R recently. Yes, It is my fault. I assume that perm.test is a very popular method. Thanks for Dennis to point out that it is in exactRankTests package. I did not realize that there are so many R package. I guess I did not ask the right question and neither in the right way.
Based on my limited knowledge on statistics, it seems like use t-statistics to test the permutation. I am just not sure. Xiang exactRankTests On Fri, Apr 23, 2010 at 9:13 AM, Greg Snow <greg.s...@imail.org> wrote: > There is no perm.test function in base R, is this from a package? Which > package? What does the documentation for that function/package say? > > -- > Gregory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > > -----Original Message----- > > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > > project.org] On Behalf Of Xiang Gao > > Sent: Thursday, April 22, 2010 1:43 PM > > To: r-help@r-project.org > > Subject: [R] What is the test statistics in perm.test > > > > Hi, > > > > The permutation test for two samples in R is function perm.test(). I > > could > > not figure out what is the statistics it estimate and how many > > permutation > > it did in default? > > > > Thanks, > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide http://www.R-project.org/posting- > > guide.html > > and provide commented, minimal, self-contained, reproducible code. > -- Xiang Gao, Ph.D. Department of Biology University of North Texas [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
