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Topic: Linear models
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Richard Scheaffer

Posts: 440
Registered: 12/6/04
Linear models
Posted: Oct 28, 1996 10:55 AM
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With regard to Josh Tabor's question, the TI treats only nonlinear models
that can be linearized by an appropriate transformation. The r and R^2 terms
are calculated (I think) from the linearized version of the data. When the
results are transformed back to the original scale, the r and R^2 are
inappropriate measures. In my opinion, they should not be given.

It should be pointed out to students that fitting a least squares line
to the transformed data is not the same as fitting a nonlinear
model directly by least squares.

Dick Scheaffer





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