Next section: Standard error of the estimate

When scores are standardized, the regression
slope (b) is equal to
Pearson's r and the Y intercept is 0 . This means
that the regression equation for standardized variables is:

Y' = rX.

Besides its use for prediction, the regression line is useful for
describing the relationship between the two variables. In particular, the slope
of the line reveals how much of a change in the criterion is associated with
a change of one unit on the predictor variable. For this example, a change
of one point on the Identical Blocks is associated with a change of just under
0.5 points on the Wonderlic.

Next section: Standard error of the estimate