[R] GAM Assumption Tests

Collin Lynch collinl at cs.pitt.edu
Thu Dec 5 17:51:00 CET 2013


Hi Mike, I recently had this issue and didn't find any package that
implemented these tests directly for the gam object.  I found it simplest
just to pull the residuals from it and run tests like shapiro.test
directly.

	Best,
	Collin.

On Thu, 5 Dec 2013, Mike.lang wrote:

> Dear all,
>
> currently I set up a GAM for my dataset (~32k records). I assume a normal
> distribution, constant variance and no correlation effects.
>
> With gam.check() it is possible to check those assumptions graphically. But
> is there also any option to do quantitative tests like the Wald-Test,
> shapiro-wilk test or VIF?
>
>
> Looking forward to your responses!
>
> Best
> Mike
>
>
>
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