[R] Monte Carlo Simulation
Charles Annis, P.E.
charles.annis at statisticalengineering.com
Fri Apr 15 21:00:44 CEST 2011
What have you tried so far?
It is often helpful to begin with a much simpler problem, then add
complexity incrementally until you've constructed the desired model.
Best wishes.
Charles Annis, P.E.
Charles.Annis at StatisticalEngineering.com
561-352-9699
http://www.StatisticalEngineering.com
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of Shane Phillips
Sent: Friday, April 15, 2011 2:50 PM
To: r-help at r-project.org
Subject: [R] Monte Carlo Simulation
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 at 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.
More information about the R-help
mailing list