Specifying a model - Partial Least Squares
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Specify a partial least squares model in the Model text box using the form Y = expression. Specify Y in Response.

Rules for expressions:

·    * indicates an interaction term or a polynomial term. For example, A*B is the interaction of predictors A and B. A*A is A2. A*A*A is A3.

·    Abbreviate a model using | or ! to indicate that you want to include all predictors and their interactions in the model. For example, A | B | C will include A, B, C, A*B, A*C, B*C, and A*B*C in the model.

·    Use - to remove terms from the model. For example, A | B | C - A*B*C includes all predictors and their interactions except for A*B*C.