On 6/1/2009 6:01 PM, Tal Galili wrote: > Hi Chuck, > Thank you for the fast reply. > I looked through that thread (that's how I came across the commands I > wrote). > > 1) My question was if this command (cochran.test) could be used the same > way as (mcnemar.test). It obviously can't be, but maybe there is another > command I don't know about. > 2) Why do you think I might not want this test ?
You posted a 5x5 matrix with values ranging from 0-3. That does not fit with assumptions 1 and 3 described on the Wikipedia page you posted (a large number of blocks and outcomes of the treatments coded as binary responses). hope this helps, Chuck > Thanks, > Tal > > > > > On Tue, Jun 2, 2009 at 12:56 AM, Chuck Cleland <cclel...@optonline.net > <mailto:cclel...@optonline.net>> wrote: > > On 6/1/2009 5:29 PM, Tal Galili wrote: > > Hello all > > I wish to perform a mcnemar.test() for a 5X5 matrix. > > Wikipedia tells me (http://en.wikipedia.org/wiki/Cochran_test) I > should turn > > to cochran.test. > > The only place I found it was in the "outliers" package, but the > command > > cochran.test() acts differently then mcnemar.test() , and doesn't > take a > > table as input. > > > > Any ideas on how to use it ? > > > > #Example code: > > aa = > > > as.table(matrix(c(0,0,0,0,1,0,2,2,1,0,1,2,2,1,0,1,1,3,2,0,0,0,1,2,3),5,5)) > > mcnemar.test(aa) > > # p-value = NA > > install.packages("outliers") > > require(outliers) > > cochran.test(aa) > > # Error in x$terms : $ operator is invalid for atomic vectors > > > > Thanks, > > Tal > > I'm not sure you actually want Cochran's Q Test, but if you do see > this thread: > > https://stat.ethz.ch/pipermail/r-help/2006-September/113139.html > > -- > Chuck Cleland, Ph.D. > NDRI, Inc. (www.ndri.org <http://www.ndri.org>) > 71 West 23rd Street, 8th floor > New York, NY 10010 > tel: (212) 845-4495 (Tu, Th) > tel: (732) 512-0171 (M, W, F) > fax: (917) 438-0894 > > > > > -- > ---------------------------------------------- > > > My contact information: > Tal Galili > Phone number: 972-50-3373767 > FaceBook: Tal Galili > My Blogs: > http://www.r-statistics.com/ > http://www.talgalili.com > http://www.biostatistics.co.il -- Chuck Cleland, Ph.D. NDRI, Inc. (www.ndri.org) 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894 ______________________________________________ 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.
