Re: R and R square over .90? for regression with imputed dataset

Posted by Rich Ulrich on Dec 19, 2012; 6:08am
URL: http://spssx-discussion.165.s1.nabble.com/R-and-R-square-over-90-for-regression-with-imputed-dataset-tp5717033p5717041.html

It is a no-no to use your criterion variable for imputing values for
your predictors.  Probably because, that could account for this sort
of result.

--
Rich Ulrich

> Date: Tue, 18 Dec 2012 19:51:51 -0800

> From: [hidden email]
> Subject: R and R square over .90? for regression with imputed dataset
> To: [hidden email]
>
> Hello,
>
> I was running regressions with the imputed variables, and I got R and R2
> over .90. Is this ever possible? The highest R2 I had with original dataset
> was over .50.
>
> I used SPSS Multiple Imputation and Missing Value Analysis functions by
> following all steps suggested by the IBM SPSS guide. The original dataset
> had a significant amount of missing values (about 10-40%). Some variables
> imputed are at the scale level as well as the individual scale items. I
> spoke to my advisor and she, too, is skeptical about this result.
>
> Any suggestions would be appreciated. Thanks much.
>
> ...