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what about plotting the predictor vs. the residual (or squared residual) in
your fitted model?


On Thu, Aug 8, 2013 at 3:10 PM, Eugenie Hunsicker
<[log in to unmask]>wrote:

> Hi all,
>
> I am interested in understanding the effect of various predictor
> variables on the spread of a given response variable.  I know how to use
> permutation
> tests to compare spreads between two groups, but I
> am wondering if there is some way to create something like a regression
> model using either
> permutation or bootstrap methods that will perform reasonably for studying
> the effect of predictors
> on spread.  Does anyone know of such an approach?
>
> Thanks,
> Eugenie
>
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>
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>
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