[S] 3 s+ regression questions

Fri, 6 Mar 1998 12:42:15 -0500 (EST)

1. Is there a difference between "nonlinear" and "polynomial" regression?

2. WHen I do a quadratic regression in s+ (a linear expression with a quadratic term), then plot it with a bestfit line, I get a straight line . . . how do I plot it so it looks like it should - a curved line?

3. When I do the local regression models, wher are the estimated parameters for the model. Can I write a prediction equation from the s+ output for a loess model for exampl ?

Frank O'Hare
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