HI, If you need to separate into two datasets,
dat1[dat1$company=="A",] # weights company #1 1 A #2 2 A #or dat1[dat1$company=="B",] #or split into a list split(dat1,dat1$company) A.K. ----- Original Message ----- From: nilsonern <nilson...@gmail.com> To: r-help@r-project.org Cc: Sent: Wednesday, November 14, 2012 11:52 PM Subject: [R] Importing Data for a two sample t-test I am trying to do a two sample t-test with data that i received in a text document. one list has the slab weights and the second has the company it is associated with. here is an example. weights company 1 A 2 A 2 B 3 B I was able to import the data but i cannot figure out how separate the data. I want to put them in two separate sets, one being A and one being B. Any help would be appreciated. Thanks. -- View this message in context: http://r.789695.n4.nabble.com/Importing-Data-for-a-two-sample-t-test-tp4649565.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. ______________________________________________ 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.