Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 |
---|---|---|---|---|---|---|---|---|---|
† Not applicable; c parameters are not estimated for generalized partial credit models, and d parameters are not estimated for two-parameter or three-parameter logistic models. NOTE: For item j, aj represents the discriminatory power of the item, bj represents a location parameter related to item difficulty, cj represents the guessing parameter, and dji represents the category threshold parameter for category i. The c parameter value is exactly zero for items scaled with the two-parameter logistic model. For item j, dji may not sum to zero because of rounding. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2012 Economics Assessment. |
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E1 | 4 | E429101 | 1.03 | -1.62 | 0.31 | † | † | † | † |
7 | E420501 | 0.90 | -0.34 | 0.22 | † | † | † | † | |
8 | E419001 | 0.55 | 0.80 | † | -0.93 | 0.93 | † | † | |
10 | E425701 | 1.45 | 0.07 | 0.24 | † | † | † | † | |
12 | E421001 | 0.43 | -0.85 | † | -1.82 | 1.82 | † | † | |
13 | E425001 | 1.01 | 0.74 | 0.32 | † | † | † | † | |
16 | E4263CL | 0.49 | -1.85 | † | 1.36 | -1.01 | -0.35 | † | |
E2 | 1 | E429501 | 0.90 | -0.22 | 0.28 | † | † | † | † |
6 | E429601 | 2.19 | 1.35 | 0.18 | † | † | † | † | |
8 | E420301 | 0.47 | -0.48 | † | -0.80 | 0.80 | † | † | |
9 | E429701 | 1.22 | 0.80 | 0.29 | † | † | † | † | |
10 | E425801 | 0.60 | 1.52 | 0.42 | † | † | † | † | |
11 | E420101 | 1.17 | -0.49 | 0.30 | † | † | † | † | |
13 | E428701 | 2.49 | 1.47 | 0.26 | † | † | † | † | |
16 | E426801 | 1.08 | -0.28 | 0.21 | † | † | † | † | |
19 | E420701 | 0.38 | -0.29 | 0.24 | † | † | † | † | |
20 | E429901 | 0.72 | -0.26 | 0.26 | † | † | † | † | |
21 | E430001 | 0.77 | -0.11 | 0.33 | † | † | † | † | |
E3 | 1 | E403501 | 1.00 | -0.47 | 0.26 | † | † | † | † |
3 | E403701 | 0.65 | 0.96 | 0.23 | † | † | † | † | |
5 | E403901 | 0.66 | -0.14 | † | 0.56 | -0.56 | † | † | |
6 | E404001 | 1.16 | 1.29 | 0.24 | † | † | † | † | |
8 | E404201 | 1.07 | 0.90 | † | 1.05 | -1.05 | † | † | |
10 | E404401 | 0.77 | -0.13 | 0.25 | † | † | † | † | |
14 | E404801 | 1.36 | -0.49 | 0.37 | † | † | † | † | |
17 | E405101 | 1.04 | 1.04 | † | † | † | † | † | |
18 | E405201 | 1.25 | -0.02 | 0.41 | † | † | † | † | |
E4 | 1 | E424601 | 0.71 | -0.67 | 0.33 | † | † | † | † |
2 | E427601 | 1.01 | -1.27 | 0.25 | † | † | † | † | |
3 | E422701 | 0.62 | 0.70 | 0.47 | † | † | † | † | |
4 | E420601 | 0.74 | 0.54 | † | -0.47 | 0.47 | † | † | |
5 | E427901 | 0.48 | 0.30 | 0.24 | † | † | † | † | |
9 | E427401 | 1.00 | -0.07 | 0.23 | † | † | † | † | |
10 | E4245CL | 0.60 | -0.31 | † | 0.46 | -0.46 | † | † | |
11 | E422801 | 0.95 | 2.24 | 0.17 | † | † | † | † | |
15 | E4243CL | 0.54 | -0.05 | † | 1.34 | -0.64 | -0.70 | † | |
18 | E430301 | 0.95 | -0.32 | 0.25 | † | † | † | † | |
E5 | 5 | E407601 | 0.99 | 0.35 | 0.29 | † | † | † | † |
6 | E407701 | 1.08 | 0.15 | 0.46 | † | † | † | † | |
9 | E408001 | 0.33 | 0.04 | † | 1.13 | -1.13 | † | † | |
12 | E408301 | 1.32 | 1.10 | 0.27 | † | † | † | † | |
13 | E408401 | 0.63 | 0.25 | † | 0.64 | -0.64 | † | † | |
16 | E408701 | 1.13 | -0.12 | 0.32 | † | † | † | † | |
17 | E408801 | 1.99 | 0.29 | 0.21 | † | † | † | † | |
18 | E408901 | 0.96 | -0.30 | 0.31 | † | † | † | † | |
20 | E409101 | 0.76 | 0.93 | 0.29 | † | † | † | † | |
21 | E409201 | 0.81 | 0.47 | 0.30 | † | † | † | † | |
E6 | 1 | E409301 | 1.16 | -0.87 | 0.31 | † | † | † | † |
2 | E409401 | 1.04 | -0.19 | 0.15 | † | † | † | † | |
4 | E409601 | 0.58 | -1.04 | 0.26 | † | † | † | † | |
5 | E409701 | 0.32 | 1.79 | † | 1.30 | -1.30 | † | † | |
8 | E410001 | 1.80 | 1.30 | 0.20 | † | † | † | † | |
13 | E410501 | 1.16 | 0.35 | 0.31 | † | † | † | † | |
14 | E410601 | 0.44 | -0.03 | † | 0.73 | -0.73 | † | † | |
15 | E410701 | 1.09 | -0.95 | 0.21 | † | † | † | † | |
16 | E410801 | 0.95 | 1.13 | 0.38 | † | † | † | † | |
17 | E410901 | 1.00 | 0.27 | 0.28 | † | † | † | † | |
E7 | 2 | E411201 | 0.98 | -0.25 | 0.23 | † | † | † | † |
5 | E411501 | 0.54 | -0.25 | 0.23 | † | † | † | † | |
9 | E411901 | 0.57 | 1.48 | † | 3.09 | 0.55 | -3.64 | † | |
14 | E412401 | 1.25 | 1.14 | 0.24 | † | † | † | † | |
16 | E412601 | 1.25 | -0.25 | 0.26 | † | † | † | † | |
17 | E412701 | 1.59 | -0.20 | 0.20 | † | † | † | † | |
18 | E412801 | 1.63 | -0.54 | 0.24 | † | † | † | † | |
E8 | 2 | E413001 | 0.55 | -0.27 | 0.24 | † | † | † | † |
3 | E413101 | 1.23 | 1.02 | 0.16 | † | † | † | † | |
11 | E413901 | 1.25 | -0.47 | 0.24 | † | † | † | † | |
12 | E414001 | 0.99 | -0.35 | 0.28 | † | † | † | † | |
13 | E414101 | 0.58 | -1.57 | † | † | † | † | † | |
14 | E414201 | 0.95 | 0.04 | 0.19 | † | † | † | † | |
15 | E414301 | 1.20 | 0.12 | 0.14 | † | † | † | † | |
16 | E414401 | 1.48 | 0.82 | 0.25 | † | † | † | † | |
17 | E414501 | 1.20 | 0.89 | 0.18 | † | † | † | † | |
20 | E414801 | 1.01 | 0.89 | 0.29 | † | † | † | † | |
E9 | 1 | E414901 | 0.74 | -0.60 | 0.33 | † | † | † | † |
5 | E415301 | 1.11 | -0.67 | 0.24 | † | † | † | † | |
7 | E415501 | 1.59 | 0.29 | 0.28 | † | † | † | † | |
10 | E415801 | 0.79 | 0.43 | 0.20 | † | † | † | † | |
11 | E415901 | 1.28 | 1.03 | 0.26 | † | † | † | † | |
13 | E416101 | 0.61 | -0.70 | † | 0.35 | -0.35 | † | † | |
14 | E416201 | 0.77 | 0.63 | 0.13 | † | † | † | † | |
15 | E416301 | 1.84 | 1.14 | 0.33 | † | † | † | † | |
18 | E416601 | 1.01 | -0.46 | 0.23 | † | † | † | † | |
20 | E416801 | 0.61 | -1.72 | 0.27 | † | † | † | † | |
E10 | 1 | E416901 | 0.96 | -0.91 | 0.34 | † | † | † | † |
4 | E417201 | 0.63 | 0.59 | † | 1.76 | -1.76 | † | † | |
7 | E417501 | 0.74 | 0.39 | 0.16 | † | † | † | † | |
8 | E417601 | 1.43 | 0.29 | 0.19 | † | † | † | † | |
10 | E417801 | 1.12 | 1.64 | 0.22 | † | † | † | † | |
11 | E417901 | 0.68 | -1.72 | 0.29 | † | † | † | † | |
12 | E418001 | 0.83 | 0.92 | 0.30 | † | † | † | † | |
17 | E418501 | 1.45 | -0.17 | 0.28 | † | † | † | † |