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Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 |
---|---|---|---|---|---|---|---|---|---|
M3 | 6 | M047301 | 0.96 | -2.07 | 0.00 | † | † | † | † |
M4 | 7 | M046601 | 1.11 | -1.09 | 0.00 | † | † | † | † |
19 | M047801 | 1.17 | 0.65 | 0.10 | † | † | † | † | |
M5 | 9 | M047001 | 0.94 | -0.62 | 0.14 | † | † | † | † |
18 | M053101 | 0.63 | 1.39 | † | 0.10 | 0.30 | -0.41 | † | |
M6 | 3 | M017801 | 1.00 | -0.76 | 0.31 | † | † | † | † |
6 | M020201 | 0.40 | -3.41 | 0.00 | † | † | † | † | |
25 | M020801 | 0.86 | 1.43 | 0.00 | † | † | † | † | |
28 | M018901 | 0.55 | 0.02 | 0.10 | † | † | † | † | |
M7 | 8 | M052701 | 1.33 | 0.72 | 0.22 | † | † | † | † |
13 | M013031 | 1.12 | 1.18 | 0.00 | † | † | † | † | |
14 | M012631 | 1.80 | 0.43 | 0.27 | † | † | † | † | |
15 | M021101 | 0.82 | 0.17 | 0.00 | † | † | † | † | |
M8 | 4 | M0732CL | 0.39 | -1.29 | † | 2.10 | 0.54 | -0.88 | -1.76 |
8 | M092201 | 1.24 | 0.40 | 0.18 | † | † | † | † | |
13 | M092601 | 0.75 | 1.52 | † | -0.49 | 0.49 | † | † | |
18 | M052801 | 0.02 | 1.55 | 0.00 | † | † | † | † | |
M9 | 3 | M013131 | 0.67 | 0.97 | 0.00 | † | † | † | † |
8 | M073501 | 0.11 | 6.20 | 0.00 | † | † | † | † | |
11 | M072901 | 0.50 | -0.68 | † | -0.53 | 0.53 | † | † | |
18 | M093801 | 0.28 | 0.06 | † | -3.41 | 2.69 | 0.72 | † | |
M10 | 4 | M051401 | 0.83 | -1.17 | 0.05 | † | † | † | † |
8 | M067101 | 0.96 | -0.74 | 0.12 | † | † | † | † | |
19 | M067501 | 0.74 | 0.55 | 0.00 | † | † | † | † | |
M11 | 10 | M106601 | 0.69 | -1.28 | 0.15 | † | † | † | † |
14 | M107001 | 1.26 | 0.52 | 0.33 | † | † | † | † | |
16 | M107201 | 1.07 | 1.89 | 0.11 | † | † | † | † | |
M12 | 6 | M110401 | 0.66 | 0.39 | 0.06 | † | † | † | † |
7 | M110501 | 0.67 | 0.78 | † | 0.51 | -0.51 | † | † | |
8 | M110601 | 0.47 | -2.43 | 0.11 | † | † | † | † | |
† Not applicable; c parameters are not estimated for generalized partial credit models.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2003 Mathematics Assessment.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. For item j, dji may not sum to zero because of rounding. |