On 05-11-2014, at 14:41, Noha Osman <[email protected]> wrote: > Hi Folks > > Iam a new user of R and I have a question . Hopefully anyone help me in that > issue > > > I have that dataset as following > > Sample Population Species Tissue R G B > 1 Bari1_062-1 Bari1 ret seed 94.52303 80.70346 67.91760 > 2 Bari1_062-2 Bari1 ret seed 98.27683 82.68690 68.55485 > 3 Bari1_062-3 Bari1 ret seed 100.53170 86.56411 73.27528 > 4 Bari1_062-4 Bari1 ret seed 96.65940 84.09197 72.05974 > 5 Bari1_062-5 Bari1 ret seed 117.62474 98.49354 84.65656 > 6 Bari1_063-1 Bari1 ret seed 144.39547 113.76170 99.95633 > > and I have 20 populations as following > > [1] Bari1 Bari2 Bari3 Besev Cermik Cudi Derici > Destek Egil > [10] Gunasan Kalkan Karabace Kayatepe Kesentas Ortanca Oyali > Cultivated Sarikaya > [19] Savur Sirnak > > I need to calculate mean and variance of each population using column [R] > using for-loop
If I’m correct you asked an almost identical question Stackoverflow (http://stackoverflow.com/questions/26742023/how-can-i-use-loops-in-r). You got all the answers you need. Berend ______________________________________________ [email protected] 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.
