Table of Contents | Search Technical Documentation | References
Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 |
---|---|---|---|---|---|---|---|---|---|
M3 | 2 | M093101 | 0.82 | 0.08 | 0.18 | † | † | † | † |
M4 | 1 | M017401 | 0.20 | -6.29 | 0.26 | † | † | † | † |
4 | M017701 | 1.03 | -0.80 | 0.25 | † | † | † | † | |
6 | M017901 | 1.42 | -0.70 | 0.27 | † | † | † | † | |
9 | M018201 | 0.58 | -0.73 | 0.12 | † | † | † | † | |
11 | M018401 | 1.07 | -0.86 | 0.30 | † | † | † | † | |
12 | M018501 | 1.52 | 0.49 | 0.25 | † | † | † | † | |
13 | M018601 | 0.87 | 0.87 | 0.15 | † | † | † | † | |
M5 | 5 | M066401 | 0.59 | -0.19 | 0.20 | † | † | † | † |
M6 | 4 | M020001 | 0.69 | -0.42 | 0.00 | † | † | † | † |
5 | M020101 | 1.14 | -0.52 | 0.00 | † | † | † | † | |
9 | M020501 | 0.82 | -0.38 | 0.00 | † | † | † | † | |
M7 | 3 | M067801 | 0.82 | -1.32 | 0.20 | † | † | † | † |
M8 | 3 | M012431 | 0.91 | -0.27 | 0.10 | † | † | † | † |
4 | M012531 | 0.75 | 0.49 | 0.10 | † | † | † | † | |
8 | M012931 | 1.25 | 0.85 | 0.22 | † | † | † | † | |
12 | N202831 | 0.68 | -2.09 | 0.24 | † | † | † | † | |
13 | M011131 | 0.66 | -1.33 | 0.26 | † | † | † | † | |
15 | M013431 | 1.43 | 0.12 | 0.21 | † | † | † | † | |
16 | M013531 | 1.03 | 1.10 | 0.12 | † | † | † | † | |
17 | M013631 | 1.33 | 0.54 | 0.05 | † | † | † | † | |
M9 | 2 | M052401 | 0.89 | 0.79 | 0.00 | † | † | † | † |
7 | M052901 | 0.67 | -0.07 | 0.00 | † | † | † | † | |
8 | M053001 | 0.96 | 1.09 | 0.00 | † | † | † | † | |
M10 | 6 | M086001 | 1.02 | 1.06 | 0.21 | † | † | † | † |
M11 | 1 | M046001 | 0.36 | -3.24 | 0.00 | † | † | † | † |
4 | M046301 | 0.96 | -1.21 | 0.26 | † | † | † | † | |
6 | M046501 | 0.97 | -0.29 | 0.29 | † | † | † | † | |
9 | M046801 | 0.59 | -1.33 | 0.00 | † | † | † | † | |
10 | M046901 | 0.98 | -1.59 | 0.00 | † | † | † | † | |
M12 | 1 | M091501 | 1.19 | 0.47 | 0.18 | † | † | † | † |
3 | M091601 | 0.89 | 0.10 | 0.17 | † | † | † | † | |
8 | M091901 | 0.50 | -0.13 | 0.15 | † | † | † | † | |
M13 | 1 | M051201 | 0.51 | -1.69 | 0.00 | † | † | † | † |
4 | M051501 | 1.07 | 1.57 | 0.23 | † | † | † | † | |
5 | M051601 | 0.68 | -0.96 | 0.00 | † | † | † | † | |
8 | M051901 | 1.59 | 0.59 | 0.08 | † | † | † | † | |
M14 | 3 | M073001 | 1.38 | 0.02 | 0.18 | † | † | † | † |
4 | M073101 | 0.87 | 0.91 | 0.36 | † | † | † | † | |
7 | M073402 | 1.95 | 1.60 | 0.17 | † | † | † | † | |
9 | M073601 | 0.53 | 1.17 | 0.00 | -0.17 | -0.42 | 0.59 | † | |
9 | M073602 | 0.72 | 1.20 | 0.48 | † | † | † | † | |
M15 | 8 | M075901 | 0.65 | 0.92 | 0.20 | † | † | † | † |
† Not applicable; the number of item parameters estimated depends upon the IRT model used for scaling. 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 is the category threshold parameter for category i. The c-parameter value is exactly zero for items scaled with the two-parameter logistic model or the generalized partial credit model. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2000 Mathematics Assessment. |