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 | 1 | E418701 | 0.32 | -2.60 | 0.26 | † | † | † | † |
5 | E427501 | 0.66 | 0.12 | † | -0.81 | 0.81 | † | † | |
6 | E426101 | 0.84 | 1.89 | 0.12 | † | † | † | † | |
9 | E429201 | 1.03 | 0.75 | 0.18 | † | † | † | † | |
14 | E420901 | 1.93 | 1.30 | 0.20 | † | † | † | † | |
17 | E422501 | 1.10 | 1.07 | 0.13 | † | † | † | † | |
18 | E429401 | 1.01 | 1.25 | 0.28 | † | † | † | † | |
19 | E428601 | 0.70 | 0.12 | 0.24 | † | † | † | † | |
E2 | 2 | E427301 | 0.92 | 0.74 | 0.22 | † | † | † | † |
3 | E423101 | 0.76 | 0.39 | 0.26 | † | † | † | † | |
4 | E421701 | 0.62 | 0.21 | † | 0.11 | -0.11 | † | † | |
5 | E423701 | 1.34 | 0.67 | 0.20 | † | † | † | † | |
7 | E425201 | 1.73 | 0.39 | 0.16 | † | † | † | † | |
12 | E423201 | 2.08 | 0.87 | 0.18 | † | † | † | † | |
17 | E426601 | 1.20 | -0.09 | 0.21 | † | † | † | † | |
18 | E429801 | 1.15 | -0.94 | 0.26 | † | † | † | † | |
E3 | 2 | E403601 | 1.26 | -0.78 | 0.22 | † | † | † | † |
4 | E403801 | 1.02 | 0.38 | 0.24 | † | † | † | † | |
7 | E404101 | 0.33 | -0.90 | 0.21 | † | † | † | † | |
9 | E404301 | 0.50 | -1.62 | 0.20 | † | † | † | † | |
12 | E404601 | 0.41 | 1.66 | † | 1.15 | -1.15 | † | † | |
13 | E404701 | 0.63 | 2.22 | 0.31 | † | † | † | † | |
15 | E404901 | 0.70 | 0.77 | 0.14 | † | † | † | † | |
16 | E405001 | 1.46 | 0.22 | 0.30 | † | † | † | † | |
19 | E405301 | 0.37 | 0.46 | 0.23 | † | † | † | † | |
E4 | 6 | E421601 | 0.61 | -0.17 | 0.26 | † | † | † | † |
8 | E430101 | 0.91 | -0.78 | 0.21 | † | † | † | † | |
12 | E428501 | 1.13 | 0.46 | 0.23 | † | † | † | † | |
14 | E430201 | 1.58 | 0.26 | 0.22 | † | † | † | † | |
16 | E420201 | 1.54 | 1.19 | 0.30 | † | † | † | † | |
17 | E423801 | 1.23 | -0.73 | 0.30 | † | † | † | † | |
E5 | 1 | E407201 | 0.83 | -0.09 | 0.37 | † | † | † | † |
2 | E407301 | 0.75 | -0.52 | 0.19 | † | † | † | † | |
4 | E407501 | 0.72 | 1.54 | † | 1.44 | 0.86 | -2.30 | † | |
8 | E407901 | 0.54 | 1.07 | 0.20 | † | † | † | † | |
11 | E408201 | 0.80 | 0.01 | 0.17 | † | † | † | † | |
14 | E408501 | 2.17 | 1.97 | 0.21 | † | † | † | † | |
15 | E408601 | 0.90 | 0.00 | 0.29 | † | † | † | † | |
19 | E409001 | 0.98 | 0.84 | 0.37 | † | † | † | † | |
E6 | 3 | E409501 | 0.69 | -1.03 | 0.21 | † | † | † | † |
9 | E410101 | 0.96 | 0.28 | 0.25 | † | † | † | † | |
10 | E410201 | 0.42 | 1.94 | † | 1.33 | 0.62 | -0.61 | -1.34 | |
18 | E411001 | 0.89 | 1.04 | 0.32 | † | † | † | † | |
E7 | 3 | E411301 | 1.54 | 1.39 | 0.27 | † | † | † | † |
4 | E411401 | 0.52 | -1.20 | † | 0.44 | -0.44 | † | † | |
6 | E411601 | 0.86 | 0.65 | 0.27 | † | † | † | † | |
7 | E411701 | 1.05 | -0.02 | 0.19 | † | † | † | † | |
8 | E411801 | 0.37 | -0.71 | 0.23 | † | † | † | † | |
10 | E412001 | 1.03 | 0.83 | 0.16 | † | † | † | † | |
11 | E412101 | 0.31 | -1.05 | 0.22 | † | † | † | † | |
13 | E412301 | 0.31 | 1.89 | † | 0.81 | -0.81 | † | † | |
E8 | 4 | E413201 | 0.51 | -0.06 | † | -2.74 | 2.63 | 0.11 | † |
5 | E413301 | 0.48 | 0.59 | 0.28 | † | † | † | † | |
6 | E413401 | 0.90 | 1.43 | 0.21 | † | † | † | † | |
7 | E413501 | 1.26 | 0.34 | 0.27 | † | † | † | † | |
8 | E413601 | 1.19 | 1.28 | 0.21 | † | † | † | † | |
9 | E413701 | 1.35 | 1.96 | † | 0.71 | -0.71 | † | † | |
18 | E414601 | 1.36 | 0.80 | 0.17 | † | † | † | † | |
19 | E414701 | 1.97 | 1.47 | 0.14 | † | † | † | † | |
E9 | 3 | E415101 | 1.81 | 1.39 | 0.23 | † | † | † | † |
6 | E415401 | 1.81 | 2.07 | 0.34 | † | † | † | † | |
8 | E415601 | 0.87 | 1.04 | 0.20 | † | † | † | † | |
9 | E415701 | 1.41 | 0.62 | † | † | † | † | † | |
12 | E416001 | 1.80 | 0.22 | 0.25 | † | † | † | † | |
16 | E416401 | 0.76 | 0.46 | 0.30 | † | † | † | † | |
E10 | 2 | E417001 | 1.09 | 0.90 | 0.27 | † | † | † | † |
3 | E417101 | 0.54 | 0.85 | 0.33 | † | † | † | † | |
5 | E417301 | 1.63 | 1.36 | 0.32 | † | † | † | † | |
6 | E417401 | 0.25 | 1.32 | 0.25 | † | † | † | † | |
13 | E418101 | 0.52 | 0.46 | † | 0.43 | -0.43 | † | † | |
14 | E418201 | 1.86 | 1.61 | 0.16 | † | † | † | † | |
15 | E418301 | 0.72 | 2.30 | 0.36 | † | † | † | † |