Hi Walmir, Here is the long version of Frank Harrell's answer.
http://www.pitt.edu/~wpilib/statfaq/regrfaq.html Paul On Tue, 2005-05-03 at 08:21 -0500, Frank E Harrell Jr wrote: > walmir-rodrigues wrote: > > Dear Fellows, > > > > How can I do to proced a step wise regression in R, if itīs possible ? > > > > Thanks, > > > > Walmir > > Here is an easy approach that will yield results only slightly less > valid than one actually using the response variable: > > x <- data.frame(x1,x2,x3,x4,..., other potential predictors) > x[,sample(ncol(x))] > > :-) -Frank > > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
