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For sum coding (and probably also for other types of contrast coding), I've seen variants like:
I understand that these affect the interpretation of the coefficient, but do the choice of these values affect any technical aspects of the model (like the model fitting process, PCA, etc.)? Or are we free to choose whatever number as long as they sum up to 0 (for sum coding)? |
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Answered by
yjunechoe
Sep 14, 2023
Replies: 1 comment
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Answered - notes:
These kinds of transformations do not affect the ratio of coefficient to SE. The ratio (beta/SE) does not change. |
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yjunechoe
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Answered - notes:
These kinds of transformations do not affect the ratio of coefficient to SE. The ratio (beta/SE) does not change.