Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 | dj5 |
---|---|---|---|---|---|---|---|---|---|---|
† 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), 2010 U.S. History Assessment. |
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H3 | 7 | H074101 | 2.58 | 1.49 | 0.44 | † | † | † | † | † |
9 | H074301 | 2.73 | 0.97 | 0.21 | † | † | † | † | † | |
11 | H074501 | 2.71 | 1.60 | 0.52 | † | † | † | † | † | |
12 | H074601 | 0.92 | 1.18 | 0.20 | † | † | † | † | † | |
16 | H075001 | 0.63 | -0.22 | 0.31 | † | † | † | † | † | |
H4 | 9 | H046301 | 0.61 | 2.23 | † | † | † | † | † | † |
10 | H046401 | 1.87 | 1.21 | 0.20 | † | † | † | † | † | |
11 | H046402 | 1.16 | 0.82 | 0.28 | † | † | † | † | † | |
13 | H046601 | 0.85 | 0.69 | 0.16 | † | † | † | † | † | |
14 | H046701 | 0.98 | 0.82 | 0.25 | † | † | † | † | † | |
15 | H046702 | 0.89 | 0.90 | 0.13 | † | † | † | † | † | |
16 | H046801 | 1.26 | 0.34 | 0.22 | † | † | † | † | † | |
H5 | 4 | H062301 | 0.92 | 1.15 | 0.38 | † | † | † | † | † |
14 | H063301 | 0.74 | 0.77 | 0.20 | † | † | † | † | † | |
H6 | 14 | H049601 | 0.72 | 1.12 | † | 1.62 | -0.63 | -0.99 | † | † |
15 | H049701 | 1.17 | 0.93 | † | -0.58 | 0.58 | † | † | † | |
16 | H049801 | 1.52 | 1.33 | 0.13 | † | † | † | † | † | |
H7 | 1 | H075301 | 0.37 | 0.99 | † | -0.09 | 0.09 | † | † | † |
2 | H075401 | 1.15 | 0.64 | 0.26 | † | † | † | † | † | |
4 | H075601 | 1.26 | 1.08 | 0.26 | † | † | † | † | † | |
15 | H076701 | 1.54 | 1.43 | 0.27 | † | † | † | † | † | |
17 | H076901 | 1.48 | 1.06 | 0.26 | † | † | † | † | † | |
H8 | 5 | H086701 | 0.77 | 1.67 | 0.19 | † | † | † | † | † |
10 | H094601 | 1.52 | 0.71 | 0.42 | † | † | † | † | † | |
12 | H096801 | 1.92 | 0.41 | 0.30 | † | † | † | † | † | |
14 | H092201 | 1.62 | 0.72 | 0.21 | † | † | † | † | † | |
17 | H093901 | 1.30 | -0.68 | 0.23 | † | † | † | † | † | |
18 | H093902 | 0.72 | -0.47 | 0.23 | † | † | † | † | † | |
H9 | 5 | H094201 | 0.67 | 0.72 | † | -0.37 | 0.37 | † | † | † |
9 | H091801 | 0.77 | 0.64 | † | 0.14 | -0.06 | -0.08 | † | † | |
14 | H095201 | 0.73 | 0.98 | 0.25 | † | † | † | † | † | |
18 | H086301 | 0.92 | -0.94 | 0.24 | † | † | † | † | † | |
H10 | 1 | H041901 | 1.01 | 1.00 | 0.28 | † | † | † | † | † |
5 | H042201 | 1.15 | 1.74 | † | 0.39 | -0.39 | † | † | † | |
6 | H042301 | 2.23 | 1.17 | 0.23 | † | † | † | † | † | |
7 | H042401 | 1.38 | 2.21 | 0.27 | † | † | † | † | † | |
15 | H0429CL | 0.42 | -0.81 | † | 0.41 | -0.02 | -0.39 | † | † | |
H11 | 1 | H063801Z | 0.74 | -0.33 | † | 1.06 | -1.06 | † | † | † |
2 | H063901 | 0.89 | -2.18 | 0.27 | † | † | † | † | † | |
3 | H064001 | 0.83 | 0.61 | † | 1.03 | -1.03 | † | † | † | |
4 | H064101 | 0.81 | 0.23 | † | 0.47 | -0.47 | † | † | † | |
9 | H064601 | 1.02 | -0.89 | 0.18 | † | † | † | † | † | |
10 | H064701 | 1.05 | -1.24 | 0.20 | † | † | † | † | † | |
11 | H064801 | 0.62 | -1.13 | 0.18 | † | † | † | † | † |