Hi Shane, See ?rbinom, ?rnorm, ?mvrnorm (in the MASS package), ?sample, ?for and ?write.table
Best, Ista On Fri, Apr 15, 2011 at 2:49 PM, Shane Phillips <sphill...@lexington1.net> wrote: > Hello, R friends... > > I am very new to R, and I need some help. I am trying to construct a > simulation for my dissertation. > > I need to create 1000 datasets of 1000 subjects with the following > variables... > > Treatment variable - Drawn from a binomial distribution (1 run, prob=.13) > Covariate 1 - Drawn from a normal distribution (mean=100, sd=16) > Covariate 2 - Drawn from a normal distribution (mean=200, sd=9) > Covariates 1 and 2 need to be correlated (say, r=.80) > Covariate 3 - Drawn from a binomial distribution (1 run, prob=.5) > Covariate 4 - Drawn from a distribution of discrete variables where 1 has an > 80% chance of being selected, 2 - 10%, 3 - 5% and 4 - 5%. This variable > would need to be recoded into 4 binary variables. > Covariate 5 - Drawn from a normal distribution (mean=84, sd=2) > Covariate 6 - Drawn from a binomial distribution (1 run, prob=.15) > Covariate 6 needs to correlate with Covariate 2 (r=.70, or so) > > I need each dataset saved as a new datafile with an iterative filename (e.g. > sample1, sample2, etc.). > > Please help! > > Thanks! > > Shane > > ______________________________________________ > 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. > -- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org ______________________________________________ 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.
