doerte.ap...@gmx.de wrote: > Hello, > > Peter Dalgaard wrote: >> Not necessarily, but the first suspicion one gets is that what you're >> doing with Friedman is not equivalent to what you're doing with ANOVA, >> could you show us the code and data (or an outline of it)? > > Please find attached the R script and the data input files. > The values in dataForFriedmanTest.dat represent the geometric mean of > the values of three repetitions for one observer and one condition. > > Am I doing something wrong there?
The .R file came as BIN file to me, so r-help may be missing it. Anyways, Friedman's test is a replacement for a two-way ANOVA and you are comparing it to a one-way analysis, and the latter is likely just wrong. Try anova(lm(AUC~as.factor(Condition)+as.factor(Observer),data=dataForANOVA)) or, maybe better summary(aov(AUC ~ as.factor(Condition) + Error(as.factor(Observer) / as.factor(Condition)), data=dataForANOVA)) > Thanks in advance > > Doerte > > PS: I'm not sure if it is possible to send the dat-files by mail. > Therefore I renamed them to *.txt. Please rename back to *.dat. -- O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907 ______________________________________________ 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.
