On Fri, May 14, 2010 at 5:54 PM, Bert Gunter <gunter.berton@gene.com> wrote:

> 1. As this is not an R question, this is probably not an appropriate list
> for posting. You might wish to consider a list specifically devoted to
> statistics and data analysis.
>
>
Well I think it is an R question to the extent that I'm using R and lm() is
an R function...
I agree I'm asking for more than just trivial R syntax



> 2. Having said that, some kind souls on this list may be willing to help.
>
> I've always depended on the kindness of strangers


> 3. I believe you have the wrong data structure and need to rethink what the
> appropriate one is. Local statistical resources, if you have any, may be
> able to help (as a more intimate understanding of the nature of your study
> design and goals may be required).
>


>
> 4. I believe your proposal to view your continuous x variable as an
> indicator for interactions is utter nonsense. Again, if possible consult a
> local statistician that you can spend some time with.



> If you do not trust the linearity of your IV, it makes sense to treat it as
> categorical. I can give you citations if you like... There are dummy codings
> if you want to treat your IV as ordinal.
>

Cheers
Bill

	[[alternative HTML version deleted]]

