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Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 |
---|---|---|---|---|---|---|---|---|---|
M1 | 3 | M183601 | 0.57 | 0.82 | † | 0.76 | -0.76 | † | † |
5 | M196501 | 0.64 | 0.47 | 0.30 | † | † | † | † | |
9 | M176401 | 1.11 | 1.74 | 0.22 | † | † | † | † | |
11 | M186101 | 2.30 | 0.85 | 0.25 | † | † | † | † | |
13 | M185801 | 2.29 | 1.64 | 0.13 | † | † | † | † | |
M2 | 5 | M305201 | 1.45 | 1.11 | 0.18 | † | † | † | † |
7 | M302901 | 0.95 | 0.46 | † | 0.23 | -0.23 | † | † | |
9 | M306601 | 0.91 | 0.82 | 0.12 | † | † | † | † | |
11 | M3059CL | 0.51 | 1.59 | † | 1.72 | -3.49 | 2.83 | -1.06 | |
14 | M307501 | 0.55 | 1.35 | † | -0.15 | 0.15 | † | † | |
M3 | 1 | M197101 | 1.25 | 0.70 | 0.13 | † | † | † | † |
8 | M193401 | 0.94 | 1.45 | † | 0.08 | -0.08 | † | † | |
11 | M175101 | 0.54 | 4.06 | 0.17 | † | † | † | † | |
12 | M183301 | 0.91 | 1.73 | 0.17 | † | † | † | † | |
14 | M179201 | 1.52 | 1.82 | † | 0.41 | -0.41 | † | † | |
M4 | 6 | M190401 | 0.98 | -0.45 | 0.15 | † | † | † | † |
8 | M197601 | 0.84 | 1.00 | † | 0.50 | -0.50 | † | † | |
10 | M197701 | 1.31 | 1.29 | 0.18 | † | † | † | † | |
14 | M197901 | 1.24 | 0.09 | 0.09 | † | † | † | † | |
M5 | 3 | M177301 | 0.96 | 0.64 | † | 0.07 | -0.07 | † | † |
9 | M182601 | 0.99 | 0.54 | 0.23 | † | † | † | † | |
13 | M185201 | 0.74 | -0.53 | † | † | † | † | † | |
14 | M198001 | 1.55 | 1.08 | 0.22 | † | † | † | † | |
M6 | 3 | M198201 | 2.04 | -0.54 | 0.33 | † | † | † | † |
4 | M198202 | 1.36 | 0.22 | 0.08 | † | † | † | † | |
5 | M198203 | 2.63 | -0.31 | 0.29 | † | † | † | † | |
7 | M176701 | 1.04 | 1.42 | 0.13 | † | † | † | † | |
14 | M174701 | 1.59 | 1.28 | 0.17 | † | † | † | † | |
M7 | 3 | M311001 | 0.51 | 0.20 | 0.22 | † | † | † | † |
7 | M307701 | 1.61 | -0.32 | 0.17 | † | † | † | † | |
9 | M311501 | 0.90 | 1.35 | 0.24 | † | † | † | † | |
12 | M309601 | 1.04 | 1.60 | 0.33 | † | † | † | † | |
M8 | 1 | M187601 | 1.33 | -0.27 | 0.14 | † | † | † | † |
7 | M188401 | 2.26 | 1.16 | 0.15 | † | † | † | † | |
9 | M188001 | 0.78 | 0.19 | † | -0.60 | 0.60 | † | † | |
M9 | 2 | M192901 | 1.16 | -0.56 | 0.22 | † | † | † | † |
9 | M192301 | 1.14 | 0.08 | 0.24 | † | † | † | † | |
10 | M198801 | 0.94 | 0.52 | 0.25 | † | † | † | † | |
13 | M185501 | 1.21 | 0.40 | 0.25 | † | † | † | † | |
M10 | 7 | M199101 | 1.99 | 1.24 | 0.17 | † | † | † | † |
8 | M199201 | 0.51 | 1.33 | † | -4.15 | 4.15 | † | † | |
9 | M190901 | 0.62 | 0.96 | 0.10 | † | † | † | † | |
10 | M199301 | 1.92 | 1.91 | 0.28 | † | † | † | † | |
11 | M190801 | 0.90 | 0.98 | † | 1.21 | -1.21 | † | † | |
M11 | 1 | M184301 | 0.96 | -1.26 | 0.20 | † | † | † | † |
4 | M180701 | 1.26 | -0.05 | 0.18 | † | † | † | † | |
10 | M1765CL | 0.54 | 0.81 | † | 0.80 | -0.07 | -0.55 | -0.18 | |
12 | M189201 | 1.11 | 0.97 | 0.24 | † | † | † | † | |
13 | M183101 | 1.95 | 1.55 | † | † | † | † | † | |
M12 | 2 | M199801 | 1.12 | 0.88 | 0.20 | † | † | † | † |
6 | M182101 | 0.78 | 1.93 | 0.32 | † | † | † | † | |
7 | M182102 | 1.44 | 1.64 | 0.07 | † | † | † | † | |
10 | M200101 | 0.98 | 0.41 | 0.17 | † | † | † | † | |
12 | M177901 | 1.12 | 1.57 | 0.36 | † | † | † | † | |
M13 | 2 | M306201 | 0.26 | -0.31 | 0.23 | † | † | † | † |
6 | M301101 | 1.18 | 0.85 | 0.22 | † | † | † | † | |
10 | M301601 | 1.03 | 1.19 | 0.26 | † | † | † | † | |
13 | M302101 | 0.73 | 2.27 | † | -0.12 | -0.66 | 0.78 | † | |
14 | M303001 | 1.29 | 1.35 | 0.16 | † | † | † | † | |
M14 | 2 | M308801 | 0.83 | 0.26 | 0.16 | † | † | † | † |
4 | M309801 | 0.96 | -0.35 | 0.19 | † | † | † | † | |
10 | M311301 | 1.55 | 1.85 | 0.21 | † | † | † | † | |
† Not applicable;
c parameters are not estimated for the two-parameter logistic model or 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 assumed to be exactly zero and is not estimated 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), 2015 Mathematics Assessment. |