Re: [R] example to demonstrate benefits of poly in regression?

2013-04-01 Thread Paul Johnson
On Mon, Apr 1, 2013 at 12:42 PM, Gabor Grothendieck wrote: > On Mon, Apr 1, 2013 at 1:20 PM, Paul Johnson wrote: > > 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

Re: [R] example to demonstrate benefits of poly in regression?

2013-04-01 Thread William Dunlap
l 01, 2013 10:21 AM > To: R-help > Subject: [R] 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

Re: [R] example to demonstrate benefits of poly in regression?

2013-04-01 Thread Gabor Grothendieck
On Mon, Apr 1, 2013 at 1:20 PM, Paul Johnson wrote: > 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 thi

[R] example to demonstrate benefits of poly in regression?

2013-04-01 Thread Paul Johnson
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 numericall