Just wanted to thank everybody here for their great help. I tried the "tapply" and it worked brilliantly. By changing its parameters I can easily compute the values for the other treatments as well. Without help, I probably would just have despaired.
Have a great time mat -- View this message in context: http://r.789695.n4.nabble.com/how-to-calculate-the-mean-of-a-group-in-a-table-tp3505986p3512145.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.
