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quadrat
2013 Apr 01
2
example to demonstrate benefits of poly in regression?
Here's my little discussion example for a quadratic regression:
http://pj.freefaculty.org/R/WorkingExamples/regression-quadratic-1.R
Students press me to know the benefits of poly() over the more obvious
regression formulas.
I think I understand the theory on why poly() should be more numerically
stable, but I'm having trouble writing down an example that proves the
benefit of this.
I