At 02:52 PM 8/7/01 +0200, Pierini Andrea ced wrote:
>Can anyone suggest an index of fit for a nonlinear regression model
>for a set of data similar to R2 ?
>I'd like one with range [0,1] .
>Thank you
My apologies if I don't understand your question, but R2 will work fine
for linear or nonlinear regression. For example, as a simple polynomial
regression, you can use
Ypred = A + B1(X1) + B2(X1**2) + B3(X1**3)
that is, just add in the nonlinear X1squared and X1cubed values.
best,
JR
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' Jeff Rasmussen, PhD '
' Indiana University Indianapolis '
' 402 North Blackford '
' Indianapolis, IN 46202 '
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