Also, since I just started to use R, I have trouble generating and
understanding some of the codes, especially choosing the correct ones.
Thanks!
tanya

On Thu, Apr 3, 2008 at 3:54 PM, Tanya Yatsunenko <yata25@gmail.com> wrote:

> Hi,
> I am doing multiple regression, and have several X variables that are
> categorical.
> I read that I can use dummy or contrast codes for that, but are there any
> special rules when there're unequal #observations in each groups (4 females
> vs 7 males in a "gender" variable)?
> Also, can R generate these codes for me?
> THanks.
>
>


-- 
Tanya

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