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Thank you very much, Jorge! Your example worked for me. Here is the code: d <- data.frame(data$groupFactor, data[2:17]) d # p-values for the shapiro test (by levels of groupFactor) with(d, aggregate(d[,-1], list(d...

At a closer look I realized that this method is good for Shapiro-Wilk test, not for Two-samples Wilcoxon test. Can somebody to sugest a solution? I want to compare town with country. 2010/5/25 Iurie Malai <iurie...

Thank you, David! Here is the code to read my file: > data <- read.table("data.txt", header=TRUE, sep=";", na.strings="NA", dec=".", strip.white=TRUE) Jorge Ivan Velez gave me a working solution, but I am ready to learn...

Thank you! Here is my adapted script: >lapply(Dataset[3:17], function(x) wilcox.test(x ~ X2, alternative="two.sided", data=Dataset, subset = X2 <= 2)) but in R I have nothing, and in R Commander I have this error message...

Thank you very much! This is my adapted script and now it is OK: >lapply(Dataset[3:17], function(x) wilcox.test(x ~ X2, alternative="two.sided", data=Dataset)) But it is possible to get results more compact, similar to...

Hi! I searched some time ago a way to get the Wilcoxon test results as a table more or less formatted. Nobody told me any solution and I found nothing on the Internet. Recently I came across this link ( http...

Hi, I use two similar scripts to put p-values of shapiro.test and, respectively, of wilcox.test in a table: a) d <- data.frame(dataset$GroupFactor, dataset[2:11]) # p-values for the shapiro test (by levels of GroupFactor...

Dear R users, I have a dataset with two variables: $esan - a grouping factor with 8 levels and $reus. I'd like to do wilcox.test on this dataset as sugested Weiwei here: https://stat.ethz.ch/pipermail/r-help...