I would like to select a few cases (for example cases corresponding to sex=male) to make summary for another variable.
How can I do this.
Thanks for your help
Fawtzy
______________________________________________ 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
