[R] Stepwise analysis with fixed variables

[Uwe Ligges]

On 19.11.2012 08:49, Einat wrote:
> Hello,
> How can I run a backward stepwise regression with part of the variables
> fixed, while the others participate in the backward stepwise analysis?
> Thank you, Einat

Read ?step and about its argument "scope" that can be a list with a 
"lower" component where you specify the minimal model.

Uwe Ligges

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