[get]

An example:

Imagine these two predictors:

    Reality: 1 1 1 1 1 9 1 1 1 1
    Predic1: 2 2 2 2 2 2 2 2 2 2
    Predic2: 3 3 3 3 3 6 3 3 3 3

    SumOfErrors(Predic1) is 16
    SumOfErrors(Predic2) is 21

So Predic1 was better then Predic2? No. Because correctly predicting the one outlier shows more predictive power then staying close to the average. Therefore we use SumOfSquerrors:

    SumOfSquerrors(Predic1) is 58
    SumOfSquerrors(Predic2) is 45

This shows that Predic2 is "better" and we are happy :)

[scrooched_moose]

It should be 16 & 21 and 58 & 45.

[get]

True. Fixed. Thanks.