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Re: st: two stage model variance estimators
Rachel Bouvier wrote:
> My first model is regressing the log of GDP on the year (ie, 1996) and
> the square of the year (ie, 3984016). Originally, I ran this model
> separately for 30 countries. I then obtained the predicted value of the
> log of GDP for each of those countries (by using -predict-) and used it
> in a second model.
Perhaps I've missed something, but I really _don't_ see the logic in
generating a quadratic term from a variable that merely records the year.
Why not use year dummies instead?
CLIVE NICHOLAS |t: 0(044)7903 397793
Politics |e: firstname.lastname@example.org
Newcastle University |http://www.ncl.ac.uk/geps
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