Displaying 1 result from an estimated 1 matches for "covercharac".
2010 Jul 07
1
Why do <none>s appear in the list of predictor variables in logistic regression using 'step' or 'stepAIC' function?
...ed and their output. Could anyone know what is going on? Just in cases, I copied the data I am using at the end of the output.
Thank you in advance for your time and help!
Kiyoshi
> # Step 2: Includes all of the variables identified from Step 1.
> logit<-glm(Presence~AreaOfCover+CoverCharac+Ivy, data=rbs.no.NA.rows, family=binomial(link=logit), na.action=na.exclude, control=list(epsilon = 0.0001, maxit = 50, trace = F))
> summary(logit)
Call:
glm(formula = Presence ~ AreaOfCover + CoverCharac + Ivy, family = binomial(link = logit),
data = rbs.no.NA.rows, na.action = na.excl...