Step wise regression

walmir-rodrigues wrote:

Dear Fellows,

How can I do to proced a step wise regression in R, if it?s 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