what is the difference between poly and predict why do we get different models when using poly function what should the coefficient be how to predict poly function why do lmer predictors differ why is the predict function different from the poly function why does lmer have different fixed effects why lmer is orthogonal polynomial and not collinear polynomial? difference between poly(x,d,raw=t) and poly(poly(x,d,raw=t) why do i get wildly different results for predict vs poly function why is the poly function orthogonal why are the predicted effects in lmer different what is the difference between predict and predict nlm how to predict age based on poly function how to predict a time variable what is the predict function in spanish what is the difference between a poly function and an orthogonal polynomial polynomial what makes a poly polynomial orthogonal what makes poly polynomial what is poly function in lmer