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Change the default -1 1 coding of categorical variable to 0 1 coding
Sep 12, 2024 01:41 PM
(4566 views)
Dear JMP community,
I found that when fitting a multiple linear regression (y ~ X1 + X2, X1 is a continuous and X2 is a categorical variable), by default JMP defines the dummy variable X2 as -1 1. Is there a way to change it to 0 1, which will be the same as the default dummy variable coding as R? Thanks!
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Re: Change the default -1 1 coding of categorical variable to 0 1 coding
Hi @statman : Indeed, I don't disagree with what Mark wrote wrt continuous variables. But, that is not relevant for categorical factors.
https://www.jmp.com/support/help/en/18.0/index.shtml#page/jmp/nominal-factors.shtml#
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