Block1 | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 |
---|---|---|---|---|---|---|---|---|---|
1 Common blocks M13-M22 were previously named M3-M12 in 2005. † 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), 2009 Mathematics Assessment. |
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M1 | 3 | M183601 | 0.64 | 0.77 | † | 0.63 | -0.63 | † | † |
5 | M196501 | 0.66 | 0.42 | 0.28 | † | † | † | † | |
9 | M176401 | 1.05 | 1.79 | 0.20 | † | † | † | † | |
11 | M186101 | 2.22 | 0.77 | 0.23 | † | † | † | † | |
13 | M185801 | 1.94 | 1.69 | 0.11 | † | † | † | † | |
M2 | 5 | M184601 | 1.45 | 0.06 | 0.24 | † | † | † | † |
7 | M190601 | 0.51 | 1.55 | † | -3.28 | 3.28 | † | † | |
9 | M1809CL | 0.46 | 1.64 | † | 0.16 | 2.11 | 0.11 | -2.39 | |
11 | M181601 | 1.88 | 1.08 | 0.12 | † | † | † | † | |
13 | M179901 | 1.36 | 1.89 | 0.09 | † | † | † | † | |
14 | M197001 | 0.48 | 0.44 | † | -2.28 | 2.28 | † | † | |
M3 | 1 | M197101 | 1.34 | 0.69 | 0.11 | † | † | † | † |
8 | M193401 | 0.92 | 1.38 | † | -0.09 | 0.09 | † | † | |
11 | M175101 | 0.50 | 3.73 | 0.16 | † | † | † | † | |
12 | M183301 | 1.35 | 1.66 | 0.18 | † | † | † | † | |
14 | M179201 | 1.68 | 1.75 | † | 0.40 | -0.40 | † | † | |
M4 | 6 | M190401 | 1.01 | -0.38 | 0.21 | † | † | † | † |
8 | M197601 | 1.05 | 1.04 | † | 0.34 | -0.34 | † | † | |
10 | M197701 | 1.92 | 1.26 | 0.23 | † | † | † | † | |
14 | M197901 | 1.32 | 0.04 | 0.09 | † | † | † | † | |
M5 | 3 | M177301 | 0.94 | 0.65 | † | 0.03 | -0.03 | † | † |
9 | M182601 | 1.23 | 0.54 | 0.19 | † | † | † | † | |
13 | M185201 | 0.76 | -0.49 | † | † | † | † | † | |
14 | M198001 | 1.07 | 1.06 | 0.21 | † | † | † | † | |
M6 | 3 | M198201 | 2.23 | -0.27 | 0.40 | † | † | † | † |
4 | M198202 | 1.47 | 0.36 | 0.10 | † | † | † | † | |
5 | M198203 | 3.08 | -0.07 | 0.36 | † | † | † | † | |
7 | M176701 | 0.75 | 1.50 | 0.11 | † | † | † | † | |
14 | M174701 | 1.38 | 1.30 | 0.17 | † | † | † | † | |
M7 | 3 | M189901 | 0.91 | 0.82 | † | 1.00 | -1.00 | † | † |
6 | M198401 | 0.96 | 0.20 | 0.24 | † | † | † | † | |
8 | M190101 | 0.69 | -0.09 | 0.16 | † | † | † | † | |
10 | M195201 | 1.11 | 0.68 | † | -0.27 | 0.27 | † | † | |
M8 | 1 | M187601 | 1.34 | -0.29 | 0.13 | † | † | † | † |
7 | M188401 | 2.06 | 1.19 | 0.14 | † | † | † | † | |
9 | M188001 | 0.72 | 0.16 | † | -0.74 | 0.74 | † | † | |
M9 | 2 | M192901 | 1.07 | -0.56 | 0.20 | † | † | † | † |
9 | M192301 | 1.30 | 0.20 | 0.30 | † | † | † | † | |
10 | M198801 | 0.88 | 0.48 | 0.22 | † | † | † | † | |
13 | M185501 | 1.82 | 0.59 | 0.28 | † | † | † | † | |
M10 | 7 | M199101 | 2.97 | 1.16 | 0.15 | † | † | † | † |
8 | M199201 | 0.59 | 1.19 | † | -3.64 | 3.64 | † | † | |
9 | M190901 | 0.65 | 0.92 | 0.11 | † | † | † | † | |
10 | M199301 | 1.33 | 1.85 | 0.27 | † | † | † | † | |
11 | M190801 | 0.92 | 1.01 | † | 1.31 | -1.31 | † | † | |
M11 | 1 | M184301 | 0.96 | -1.21 | 0.21 | † | † | † | † |
4 | M180701 | 1.43 | 0.12 | 0.16 | † | † | † | † | |
10 | M1765CL | 0.55 | 0.83 | † | 0.67 | -0.01 | -0.37 | -0.29 | |
12 | M189201 | 1.18 | 0.90 | 0.22 | † | † | † | † | |
13 | M183101 | 2.12 | 1.54 | † | † | † | † | † | |
M12 | 2 | M199801 | 0.95 | 0.96 | 0.17 | † | † | † | † |
6 | M182101 | 1.02 | 1.75 | 0.32 | † | † | † | † | |
7 | M182102 | 1.57 | 1.65 | 0.09 | † | † | † | † | |
10 | M200101 | 0.92 | 0.35 | 0.15 | † | † | † | † | |
12 | M177901 | 1.25 | 1.77 | 0.37 | † | † | † | † | |
M13 | 5 | M055901 | 0.21 | -3.76 | 0.20 | † | † | † | † |
12 | M095201 | 1.62 | 1.09 | 0.17 | † | † | † | † | |
15 | M011831 | 1.69 | 1.48 | 0.20 | † | † | † | † | |
16 | M076601 | 0.91 | 0.76 | † | -0.66 | 0.66 | † | † | |
17 | M095401 | 0.40 | -0.16 | † | -1.07 | 1.07 | † | † | |
M14 | 10 | M092701 | 0.93 | -0.01 | 0.28 | † | † | † | † |
11 | M053201 | 1.12 | 0.64 | 0.26 | † | † | † | † | |
16 | M019401 | 1.72 | 1.64 | 0.25 | † | † | † | † | |
17 | M019501 | 1.76 | 1.54 | 0.11 | † | † | † | † | |
M15 | 13 | M056101 | 1.06 | 0.54 | 0.23 | † | † | † | † |
18 | M0717CL | 2.21 | 1.67 | † | † | † | † | † | |
19 | M094701 | 0.40 | 0.59 | † | 1.59 | -0.84 | -0.27 | -0.48 | |
M16 | 8 | M131501 | 1.73 | 1.44 | 0.04 | † | † | † | † |
11 | M056301 | 1.14 | -0.20 | 0.06 | † | † | † | † | |
12 | M128501 | 2.23 | 1.25 | 0.18 | † | † | † | † | |
14 | M130401 | 1.15 | 0.87 | 0.19 | † | † | † | † | |
16 | M071001 | 0.95 | 1.19 | † | -0.16 | 0.16 | † | † | |
M17 | 4 | M130801 | 0.76 | -0.48 | 0.08 | † | † | † | † |
7 | M129501 | 0.84 | 0.50 | 0.14 | † | † | † | † | |
11 | M134901 | 0.81 | 0.04 | 0.13 | † | † | † | † | |
13 | M133301 | 0.77 | 0.25 | 0.09 | † | † | † | † | |
14 | M134701 | 2.28 | 1.28 | 0.18 | † | † | † | † | |
15 | M129601 | 1.02 | 0.46 | 0.19 | † | † | † | † | |
18 | M074101 | 0.52 | 0.68 | † | -0.35 | -0.13 | 0.48 | † | |
M18 | 10 | M052501 | 0.86 | -0.02 | 0.30 | † | † | † | † |
17 | M021601 | 2.22 | 2.13 | † | † | † | † | † | |
18 | M021602 | 1.60 | 1.76 | † | † | † | † | † | |
M19 | 6 | M0707CL | 0.66 | -0.52 | † | 0.83 | -0.36 | -0.47 | † |
14 | M076401 | 1.43 | 1.18 | 0.30 | † | † | † | † | |
16 | M012031 | 0.96 | 0.67 | † | † | † | † | † | |
17 | M076501 | 0.83 | 1.59 | 0.16 | † | † | † | † | |
19 | M057101 | 2.34 | 1.87 | † | † | † | † | † | |
M20 | 5 | M021701 | 1.41 | 0.04 | † | † | † | † | † |
6 | M021702 | 1.03 | -0.38 | † | † | † | † | † | |
7 | M092101 | 1.07 | 0.43 | 0.24 | † | † | † | † | |
8 | M056401 | 1.03 | 0.33 | 0.31 | † | † | † | † | |
9 | M011431 | 1.25 | 0.18 | 0.19 | † | † | † | † | |
10 | M059401 | 1.62 | 0.87 | 0.22 | † | † | † | † | |
13 | M056201 | 1.01 | 0.46 | 0.25 | † | † | † | † | |
14 | M011531 | 1.74 | 0.91 | 0.08 | † | † | † | † | |
15 | M059301 | 1.30 | 0.71 | 0.16 | † | † | † | † | |
18 | M053401 | 0.23 | 0.94 | † | 2.27 | -1.87 | 1.12 | -1.51 | |
M21 | 4 | M127701 | 0.83 | -0.80 | 0.18 | † | † | † | † |
8 | M126101 | 0.68 | 0.29 | 0.27 | † | † | † | † | |
11 | M128701 | 1.46 | 1.12 | 0.22 | † | † | † | † | |
13 | M131201 | 1.07 | 1.34 | † | † | † | † | † | |
15 | M132301 | 1.89 | 0.87 | 0.09 | † | † | † | † | |
17 | M128901 | 1.15 | 1.85 | 0.25 | † | † | † | † | |
M22 | 5 | M127501 | 0.93 | 0.23 | 0.12 | † | † | † | † |
6 | M133101 | 1.12 | 0.79 | 0.20 | † | † | † | † | |
11 | M127101 | 1.22 | 0.77 | 0.29 | † | † | † | † | |
12 | M133801 | 0.54 | 0.80 | † | -1.15 | 1.15 | † | † | |
14 | M127001 | 1.22 | 0.88 | 0.14 | † | † | † | † | |
17 | M130101 | 2.77 | 1.21 | 0.16 | † | † | † | † |