Hello I have two issues
1. I have a linear model with several thousands of Y and X variables, so if I do not want to write them down one by one in the lm(Y ~ X) model how should I go about it. 2. Also, if I suspect that some of the Y variables could not be independent, what function should I apply? Regards Rosario ______________________________________________ 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.