Can you describe how your data is organized. It is clear there are eight columns, but it is not clear how the groups are represented, a Group column or do the groups have to be assembled from information in another column (a column with CD8.14, etc)? Create a small version of the data and use dput() to create a readable version that can be pasted into a plain text email (don't use html) usually results in a faster response.
---------------------------------------------- David L Carlson Associate Professor of Anthropology Texas A&M University College Station, TX 77843-4352 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of David Chertudi > Sent: Friday, July 06, 2012 9:15 AM > To: r-help@r-project.org > Subject: [R] Mann-Whitney by group > > Hello, > > I'm having some issues grouping cases for some Mann-Whitney U tests I'm > attempting to run. I'm willing to use wilcox.test if it'll work; I've > also tried wilcox_test() from the "coin" package. Here's the deal: for > each column (A through H), I would like to run the two-sample > independent test, comparing Group 5 (CD8.14 through CD8.17) to Group 6 > (CD8.18 through CD8.21). So, for A, test Group 5 agains Group 6, for B, > test Group 5 against Group 6, and so on. I'm sure this is basic, but > thank you in advance for any help you can provide. > > All the best, > David > > > > [[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. ______________________________________________ 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.
