(3) Performance metric: When compar

(3) Performance metric: When comparing final exam scores for the experimental and control
classes, we saw highly statistically significant differences in the scores (p > .001). The mean
score for the entire class (N=236) was 77.8 (a C), with a standard deviation of 7.0; for the
experimental class the mean was 81.5 (a B); for the control class the mean was 73.0 (a C). We
looked at this performance data in several different ways.