Table 1.

Mean Scores and Pass Rates across 3 Conditions and 4 Administrations

Administration	N	Mean (SD) of the Sample			Pass (%)
Administration	N	Worse	Actual	Better	Worse	Actual	Better
April 2014	10,618	499.0 (108.1)^*	507.1 (108.3)	512.6 (109.3)^{^†}	87.3	89.0	89.9
November 2014	4,802	462.9 (109.1)^*	471.9 (109.6)	476.8 (110.6)^{^†}	76.7	79.5	81.1
April 2015	9,605	491.9 (105.4)^*	499.9 (105.8)	505.6 (105.9)^{^†}	85.4	87.1	88.2
November 2015	4,063	446.1 (108.2)^*	454.2 (108.9)	459.0 (109.1)^{^†}	71.3	74.4	76.0
Total	29,088	483.3 (109.2)	491.5 (109.5)	496.9 (109.5)	82.7	84.8	86.0

↵* Statistically significantly lower than the actual condition (P < .000, 2-tailed).
↵† Statistically significantly higher than the actual condition ( P < .000, 2-tailed).
SD, standard deviation.