You have received no answer yet. I think this is largely because there
is no simple answer.
1. You don't need to mess with dummy variable. R takes care of this
itself. Please read up on how to do regression in R.
2. However, it may not work anyway: too many variables/categories for
your data. Or
Dear all,
I would like to run a simple regression model y~x1+x2+x3+...
The problem is that I have a lot of independent variables (xi) -- around
one hundred -- and that some of them are categorical with a lot of
categories (like, for example, ZIP code). One straightforward way would be
to (a) tran
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