When the Partial Least Square personality is selected in the Fit Model window, the Standardize X option is selected by default. This ensures that all columns entered as model effects and that all columns that are involved in an interaction or polynomial term are standardized.
All model effects are then centered or scaled, in accordance with your selections of the Centering and Scaling options, prior to inclusion in the model.
If the Standardize X option is not selected, and Centering and Scaling are both selected, then the term that is entered into the model is calculated as follows:
