On 15/06/17 11:28, lily li wrote:
Thanks. I thought lm() function is for linear model, such as the
correlation below:
Y= aX + b
On Wed, Jun 14, 2017 at 5:25 PM, MacQueen, Don <macque...@llnl.gov> wrote:
Start with the lm() function; i.e., see
?lm
And you don't think that Y = a*cos(X) + b is a linear model?
The mind boggles.
Well, I guess there is a "subtlety" here. Linear models are *linear in
the PARAMETERS of the model*, not in the predictors.
First-year knuckle-draggers get confused about this. People who are
using R to do research should be a bit beyond such confusion.
cheers,
Rolf Turner
--
Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
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