>So why not start with some statistical textbook? There are plenty of them available in CRAN.
I wasn't implying, that I haven't read any textbook, or didn't do any research. I read some textbooks/Papers/etc. during the research about what to do and came across the wilcox test. I meant to imply that I could have problems understanding some of the answers, and that maybe additional explaining would be necessary. My doubts stem from the fact, that the wilcox test is a - as far as I know - ranking test, that states if two groups are different. My assumption is, due to the fact that the second group has a much higher sample size, it is clear that it differs from the first group. I performed a t-test (just to see; I am aware that I am not allowed to perform it, because my samples aren't normally distributed) and it gave me a p-value of 0.3. Actually I am not even entirely sure, if wilcox is the right test. I just want to know if the means of the two groups are significantly different. -- View this message in context: http://r.789695.n4.nabble.com/Comparing-two-groups-tp4678190p4678277.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.