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- Mon Jun 28, 2010 8:12 am
- Forum: MLwiN user forum
- Topic: Betas for orthogonal polynomial
- Replies: 0
- Views: 3631
Hello all, I have six waves of election studies from which I created a long format dataset with a categorical identifyer "year". I model the effect of the year using orthogonal polynomial transformation (linear and quadratic) and interact predictors in the model with the "year" i...