TABLE 2.

Sample size, means, and SDs for each imputed data set

		Imputed data set
	Original	1	2	3	4	5
Pretest
Sample size (N)	513	515	515	515	515	515
Mean	0.69	0.69	0.69	0.70	0.69	0.69
SD	0.30	0.30	0.30	0.30	0.29	0.29
t Ratio from original	—	0.03	0.02	0.05	0.02	0.03
Quiz 1
Sample size (N)	497	515	515	515	515	515
Mean	0.68	0.68	0.68	0.68	0.68	0.67
SD	0.21	0.21	0.21	0.21	0.21	0.21
t Ratio from original	—	0.04	0.01	0.01	0.01	0.11
Quiz 2
Sample size (N)	492	515	515	515	515	515
Mean	0.72	0.72	0.72	0.72	0.72	0.72
SD	0.26	0.26	0.26	0.27	0.26	0.27
t Ratio from original	—	0.03	0.00	0.02	0.08	0.15
Posttest
Sample size (N)	513	515	515	515	515	515
Mean	0.98	0.98	0.98	0.98	0.98	0.98
SD	0.26	0.27	0.27	0.26	0.26	0.26
t Ratio from original	—	0.03	0.01	0.02	0.02	0.03