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Block | Item | NAEP ID | aj | bj | cj |
---|---|---|---|---|---|
# Rounds to zero. 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. The c parameter value is exactly zero for items scaled with the two-parameter logistic model. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2004 Mathematics Long-Term Trend Assessment. |
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M1 | 1 | N256101 | 0.76 | -2.43 | 0.00 |
2 | N260601 | 1.42 | -1.82 | 0.00 | |
3 | N262401 | 0.93 | -1.60 | 0.27 | |
4 | N258804 | 0.89 | -2.19 | 0.31 | |
5 | N286001 | 0.68 | -1.37 | 0.12 | |
6 | N286002 | 1.02 | -1.59 | 0.11 | |
8 | N286302 | 1.24 | -0.78 | 0.33 | |
9 | N278501 | 0.92 | -0.30 | 0.00 | |
10 | N278502 | 1.07 | 0.10 | 0.00 | |
11 | N278503 | 0.79 | -0.24 | 0.00 | |
12 | N258802 | 1.62 | -0.55 | 0.26 | |
13 | N254602 | 1.16 | -0.47 | 0.15 | |
14 | N259901 | 0.98 | -0.22 | 0.27 | |
15 | N287101 | 1.26 | -0.46 | 0.34 | |
16 | N270301 | 0.84 | -2.33 | 0.14 | |
17 | N270302 | 1.16 | -0.37 | 0.08 | |
18 | N255701 | 1.05 | -1.38 | 0.15 | |
19 | N254301 | 1.04 | 0.35 | 0.34 | |
21 | N260901 | 1.73 | -0.32 | 0.19 | |
22 | N256801 | 1.09 | -0.68 | 0.26 | |
23 | N258803 | 1.28 | -0.19 | 0.25 | |
24 | N262601 | 0.71 | 0.07 | 0.20 | |
25 | N253901 | 1.06 | -0.72 | 0.20 | |
26 | N253902 | 0.86 | 0.60 | 0.48 | |
27 | N253903 | 1.04 | 0.29 | 0.33 | |
28 | N253904 | 2.02 | 0.47 | 0.39 | |
29 | N263001 | 0.71 | 0.70 | 0.00 | |
30 | N278905 | 0.49 | 1.13 | 0.25 | |
31 | N287301 | 0.86 | 0.71 | 0.00 | |
32 | N287302 | 0.86 | 0.38 | 0.00 | |
33 | N264301 | 0.91 | 1.25 | 0.00 | |
35 | N251101 | 1.19 | 0.80 | 0.00 | |
M2 | 1 | N254601 | 1.08 | -2.36 | 0.27 |
3 | N262301 | 0.57 | -1.48 | 0.29 | |
4 | N263201 | 0.90 | -1.41 | 0.43 | |
5 | N263202 | 0.89 | -0.72 | 0.42 | |
6 | N260101 | 1.15 | -1.47 | 0.17 | |
7 | N254001 | 0.81 | -1.54 | 0.19 | |
8 | N269001 | 1.21 | -0.87 | 0.17 | |
9 | N278901 | 1.02 | -1.00 | 0.17 | |
10 | N261501 | 0.69 | -1.89 | 0.20 | |
11 | N261801 | 0.57 | -1.42 | 0.19 | |
12 | N261201 | 0.47 | 0.18 | 0.19 | |
13 | N261601 | 0.83 | 1.93 | 0.38 | |
14 | N261301 | 0.49 | 0.14 | 0.12 | |
15 | N281401 | 0.66 | 1.40 | 0.16 | |
16 | N280401 | 0.63 | -0.57 | 0.00 | |
17 | N259001 | 1.06 | -0.18 | 0.00 | |
18 | N287102 | 0.94 | -0.84 | 0.23 | |
19 | N286301 | 1.06 | -1.02 | 0.17 | |
20 | N286501 | 1.04 | -1.07 | 0.24 | |
21 | N262501 | 0.47 | -1.94 | 0.31 | |
22 | N262502 | 1.24 | 1.17 | 0.21 | |
23 | N263101 | 0.89 | -0.79 | 0.00 | |
24 | N258801 | 1.52 | -0.51 | 0.35 | |
25 | N264701 | 1.52 | -0.33 | 0.24 | |
26 | N261001 | 0.84 | -0.45 | 0.24 | |
27 | N251701 | 0.85 | -0.76 | 0.11 | |
28 | N278902 | 1.06 | -0.37 | 0.30 | |
29 | N260801 | 1.39 | -0.08 | 0.00 | |
30 | N278903 | 1.43 | -0.35 | 0.18 | |
31 | N255601 | 2.81 | 1.29 | 0.32 | |
33 | N268901 | 1.45 | 0.27 | 0.19 | |
34 | N268801 | 1.25 | 0.97 | 0.11 | |
35 | N255801 | 0.85 | 1.68 | 0.00 | |
M21 | 1 | N306801 | 1.21 | # | 0.34 |
2 | N306901 | 0.88 | -0.48 | 0.10 | |
3 | N307001 | 1.50 | -0.16 | 0.19 | |
4 | N307101 | 1.10 | -1.22 | 0.24 | |
5 | N307201 | 1.14 | -0.99 | 0.16 | |
6 | N307301 | 0.76 | -0.61 | 0.00 | |
7 | N307401 | 0.63 | -1.22 | 0.21 | |
8 | N307501 | 1.28 | -0.45 | 0.20 | |
9 | N307601 | 0.87 | -1.14 | 0.31 | |
10 | N307701 | 1.53 | 0.89 | 0.00 | |
11 | N307801 | 1.23 | -1.06 | 0.30 | |
12 | N307901 | 1.70 | -0.30 | 0.37 | |
13 | N308001 | 1.62 | -0.46 | 0.20 | |
14 | N308101 | 0.90 | 0.82 | 0.00 | |
15 | N300801 | 1.16 | -1.12 | 0.14 | |
16 | N300901 | 1.57 | -0.70 | 0.21 | |
17 | N301001 | 1.20 | -0.39 | 0.18 | |
18 | N301101 | 0.67 | -1.45 | 0.29 | |
19 | N301201 | 0.89 | -1.20 | 0.24 | |
20 | N308201 | 1.55 | -0.06 | 0.09 | |
21 | N308301 | 1.24 | -0.27 | 0.15 | |
22 | N308401 | 1.71 | 0.98 | 0.14 | |
23 | N308501 | 0.84 | -0.37 | 0.00 |