Means and standard deviations for practice assessment groups
Total
Practice tests taken
Group 1
12,956
P1 + P2
483 (random sample)
P1 + P2
Group 2
14,576
Took P1 or P2
483
None
Total
Practice tests taken
Group 1
12,956
P1 + P2
483 (random sample)
P1 + P2
Group 2
14,576
Took P1 or P2
483
None
N
M
SD
Group 1
483
67.11
14.50
Group 2
483
59.08
15.39
N
M
SD
Group 1
483
67.11
14.50
Group 2
483
59.08
15.39
Note(s): Group 1 took a practice assessment before the normal test administration. Group 2 did not take a practice assessment before the normal administration