Effects of Polynomial terms

[deleted_user]

Dose any body know how to lead the SAS Enterprise Guide to take the effects of my polynomial terms (Degrees 10) in the 'Polynomial' Model in 'Linear Models' in 'ANOVA' analysis, please? Thank you

[Doc_Duke]

I can't help on your basic question, but polynomials beyond the cube level are generally uninterpretable and highly unstable. The tails really whip around due to the data dependencies; if the data change even a little the coefficients can be very different. I think that Frank Harrell's Regression book has a discussion on it.