Table 8: The means and standard deviations of the number of tests passed in each of the two courses, along with the correlation between the two courses. The first line gives the observed values corresponding to Table 1; the estimated predictive values associated with the first, second, and third models follow.

First course Second course Correlation
Mean Std. Dev. Mean Std. Dev.
Observed 3.519 0.699 2.346 0.947 0.667
First model 3.545 0.855 2.370 0.946 0.412
Second model 3.551 0.769 2.371 0.847 0.284
Third model 3.533 0.752 2.355 0.843 0.246