Hi,
I have a question to ask. if in a linear regression model, the independent
variables are not statistically significant, is it necessary to test these
variables in a non-linear model? Since most of non-linear form of a variable
can be represented to a linear combination using Taylor's theorem, so I
wonder whether the non-linear form is also not statistically significant in
such a situation.
Best Regards
Hsiao-nan Cheung
2008/10/08
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