wu sz wrote: > Hello there, > > how to do the test for a significant difference between two groups > mean vectors or across several group means vectors?
This is not an R question. You cannot test on mean differences without assumptions re. the variance. Please read a basic textbook on statistics. Uwe Ligges > Thank you, > Shengzhe > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
