Thanks, Chris. But that leaves me with the same problem: what does the
difference in a prediction interval have to be to conclude that the
prediction interval x1 on y1 in model m1 is significantly better than for
x1 on y2 in model m2?


On 26 April 2012 00:48, Chris Howden <chris@trickysolutions.com.au> wrote:

> U could calculate prediction intervals.  The smaller the interval the
> 'better' the estimation.
>

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