It starts with the initial model you gave it, which contains all your
explanatory variables already. You presumably wanted to use a simpler
model to start with. As in:
Arguments:
object: an object representing a model of an appropriate class. This
is used as the initial model in the stepwise search.
On Wed, 18 Jun 2003 [EMAIL PROTECTED] wrote:
> I'm attempting to select a model using stepAIC. I want to use a forward
> selection procedure. I have specified a "scope" option, but must not be
> understanding how this works. My results indicate that the procedure begins
> and ends with the "full" model (i.e., all 17 independent variables)...not
> what I expected. Could someone please point out what I'm not understanding?
[output snipped]
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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