Multiple linear Regression: Standardized Coefficients

It's a bit dangerous to call them "betas" in this list. Standardized
regression coefficients sounds much better :)

A simple  way is to  first standardize your variables and then run lm again.

lm(scale(height)~scale(age) + factor(sex))
# or, depending on what you want:
lm(height~scale(age)+factor(sex))
# or, but only for Statistica and SPSS users:
lm(scale(height)~scale(age) + scale(sex))

# But of course, it's pointless in your case: standardization makes
sense when units don't matter
# but years and meters (even feet and inches, for that matter!) make
much more sense than sd
# "units" of  an  unknown sample.

KK

Hello everybody,

Can anyone tell me, how to obtain standardized regression coefficients
(betas) for
my independent variables when doing a multiple linear regression?

height<-c(180,160,150,170,190,172)
sex<-c(1,2,2,1,1,2)
age<-c(40,20,30,40,20,25)

fit<-lm(height~age+sex)
summary(fit)

I already heard about the "QuantPsyc"-Package, which, unfortunately,
produces an error
(it says "sd(<data.frame> is deprecated").


Thank you very much!
David

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