Source of variability

Quadratic sum

Degree of freedom

Mean square

F

Between-group

.472

2

.236

.766

Pre-test of EE

34.711

1

34.711

112.711***

Between-group × EE

Pre-test

.722

1

.722

2.343

Intra-group

11.703

38

.308

Total

272.120

42