Hi all, i have problem when i try to use wilcoxon sign rank in multtest, code is : > x <- exprs(gse[ ,c(49,55,50,56,51,57,52,58,53,59,54, 60)]) >y <- c(1,0,1,0,1,0,1,0,1,0,1,0) >MTP(X = x, Y = group, test = "t.pair", robust = TRUE) it give me ERROR: "Robust test statistics currently not available for one-sample or two-sample paired test statistics" but in package manuals i read : When robust=TRUE, non-parametric versions of each test are performed. i there is other function to run wilcoxon sign rank test, i need to know it. lumbw ds sds -- Best Regards, Islam Amin. [[alternative HTML version deleted]]