Table 1: The distribution of mathematics test item means and the percentages of the correct responses ( = 463).
 1a 
mean
(%)		1b 
mean
(%)		2a 
mean
(%)		2b 
mean
(%)		3a 
mean
(%)		3b 
mean
(%)		4 
mean
(%)		Total
PK2.30
(69.9)		1.85
(42.9)		1.11
(28.1)		0.64
(7.1)		1.02
(30.1)		0.12
(1.0)		0.00
(0.0)		7.04
MAB2.73
(88.9)		2.59
(76.2)		2.16
(68.3)		1.19
(15.9)		2.13
(66.7)		0.48
(9.5)		0.02
(0.0)		11.30
MAA2.96
(96.4)		2.73
(78.2)		2.73
(87.3)		1.95
(36.4)		2.00
(65.5)		1.02
(25.5)		0.35
(3.6)		13.73
UNIV2.72
(87.9)		2.48
(69.8)		2.60
(83.2)		1.47
(22.8)		1.90
(60.4)		0.69
(13.4)		0.07
(0.0)		11.93
All2.57
(81.4)		2.26
(60.3)		1.93
(58.3)		1.14
(16.8)		1.57
(49.0)		0.46
(9.1)		0.06
(0.4)		9.99