TABLE 8.

A comparison of group achievements using Paired t-test analysis.

Groups	Tests	Statistic		df	p	Effect size		Power
Control	Pre/Post	Student’s t	−1.75	55.0	0.086	Cohen’s d	−0.234
Experimental	Pre/Post	Student’s t	−5.92	55.0	<0.001	Cohen’s d	−0.791	0.98