create a vector containing 1,2,3 sample one value
remove the sampled value from the initial vector sample again now select the observations belonging to the strata indexed by the two sampled values -> not difficult. Most certainly, other approaches work too, maybe even better. Rolf, is he taking a course of yours? :) Best Daniel lamack lamack wrote: > > > Dear all, I have two vector: > strata response1 11 21 32 12 22 3. .. .. .10 110 210 3. > .. .. .100 1100 2100 3 > I need to get a stratified random sample of size = 100, such that: > if I select response = 1 in strata 1 then I need sample 2 or 3 in strata 2 > > if I select response = 2 in strata 2 then I need to sample 1 or 3 in > strata 3 > if I select response = 3 in strata 2 then I need to sample 1 or 2 in > strata 3 > and so on. Please, how can I do this? > Best regards > _________________________________________________________________ > Cansado de espaço para só 50 fotos? Conheça o Spaces, o site de > relac[[elided Hotmail spam]] > > [[alternative HTML version deleted]] > > > ______________________________________________ > 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. > > -- View this message in context: http://www.nabble.com/Stratified-random-sample-tp18499013p18499744.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.
