Look at kruskalmc in package pgirmess and package multcomView for plotting the results.
---------------------------------------------- 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 jhartsho > Sent: Monday, June 11, 2012 2:27 PM > To: r-help@r-project.org > Subject: [R] Kruskal Wallis Post hoc > > Hi, I have searched and found a response to a question similar to mine > but > when I tried the code, R says it's not an actual function so I thought > I'd > ask here. > > http://r.789695.n4.nabble.com/file/n4633035/Cookies.csv Cookies.csv > > I have attached the data I am using. I am trying to look at two > things: how > moisture content changes over time, and how it changes along the length > of a > log (bolt). My data is not normal and doesn't become normal after > ArcSin or > Log transformations. Because the 'Days' has 4 levels, I performed a > Kruskal-Wallis (kruskal.test) and got significant results. Same for > comparing 'Cookie'. > > Neither of these have only 2 levels so significance here doesn't really > explain it in depth....but everything I'm finding for post hoc with a > KW > says Mann Whitney. But when I try this (wilcox.test) in R it doesn't > work - > bc it should only have 2 levels. > > Can I simply run a tukeyHSD to see differences between levels? > > -- > View this message in context: http://r.789695.n4.nabble.com/Kruskal- > Wallis-Post-hoc-tp4633035.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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.