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Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 |
---|---|---|---|---|---|---|---|---|---|
† 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 assumed to be 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), 2013 Mathematics Assessment. | |||||||||
MC | 8 | M150501 | 1.19 | 0.66 | .29 | † | † | † | † |
9 | M150601 | 1.02 | 1.63 | .09 | † | † | † | † | |
11 | M150801 | 0.51 | 1.73 | † | -1.64 | 1.64 | † | † | |
14 | M151101 | 1.25 | 0.40 | .05 | † | † | † | † | |
15 | M151201 | 0.61 | 0.90 | † | † | † | † | † | |
MD | 5 | M151701 | 1.19 | -0.06 | .23 | † | † | † | † |
7 | M151901 | 0.68 | 0.18 | .05 | † | † | † | † | |
9 | M152101 | 0.70 | 0.71 | .17 | † | † | † | † | |
10 | M152201 | 1.01 | 0.10 | .21 | † | † | † | † | |
13 | M152501 | 1.74 | 0.91 | .14 | † | † | † | † | |
14 | M152602 | 0.78 | 0.42 | † | 1.70 | -2.43 | 0.73 | † | |
ME | 5 | M221301 | 0.83 | -0.12 | .27 | † | † | † | † |
8 | M221601 | 1.06 | 0.54 | .12 | † | † | † | † | |
10 | M221801 | 0.95 | 0.56 | .23 | † | † | † | † | |
12 | M222001 | 0.86 | 1.39 | .20 | † | † | † | † | |
13 | M222101 | 1.45 | 2.39 | .22 | † | † | † | † | |
MF | 2 | M140501 | 1.47 | -0.33 | .21 | † | † | † | † |
6 | M140901 | 0.76 | -0.11 | .08 | † | † | † | † | |
12 | M141501 | 1.10 | -0.18 | .26 | † | † | † | † | |
16 | M141901 | 0.44 | 1.56 | † | 2.23 | 1.09 | -0.82 | -2.50 | |
MG | 6 | M169401 | 1.08 | 0.60 | .20 | † | † | † | † |
10 | M164201 | 0.94 | 1.27 | .17 | † | † | † | † | |
11 | M170201 | 1.19 | 0.48 | .30 | † | † | † | † | |
12 | M165301 | 0.98 | 0.65 | † | 0.14 | -0.14 | † | † | |
MH | 6 | M238901 | 1.41 | -0.38 | .21 | † | † | † | † |
8 | M237901 | 0.51 | -0.09 | † | 0.09 | -0.09 | † | † | |
10 | M236501 | 1.18 | 0.30 | .08 | † | † | † | † | |
12 | M236901 | 1.52 | 0.50 | .13 | † | † | † | † | |
MI | 5 | M238501 | 0.65 | 0.06 | .22 | † | † | † | † |
7 | M235501 | 0.88 | -1.24 | † | † | † | † | † | |
13 | M234801 | 0.96 | -0.63 | .15 | † | † | † | † | |
15 | M2372CL | 0.52 | -0.19 | † | 0.38 | 1.09 | -1.04 | -0.44 | |
MJ | 3 | M222601 | 0.94 | -0.64 | .06 | † | † | † | † |
5 | M222801 | 1.43 | -0.17 | .07 | † | † | † | † | |
8 | M223101 | 0.54 | -0.78 | † | -2.07 | 2.07 | † | † | |
11 | M223401 | 0.40 | 2.46 | .34 | † | † | † | † | |
15 | M223801 | 0.48 | 0.17 | † | -0.58 | 0.58 | † | † | |
MK | 6 | M171001 | 1.02 | 1.63 | .47 | † | † | † | † |
9 | M168301 | 0.72 | 0.66 | † | -0.50 | 0.50 | † | † | |
12 | M164701 | 0.90 | 1.50 | .26 | † | † | † | † | |
14 | M165201 | 1.50 | 1.04 | .15 | † | † | † | † | |
17 | M104901 | 0.69 | 1.55 | † | 0.71 | -0.71 | † | † | |
ML | 7 | M234001 | 0.63 | -2.40 | † | † | † | † | † |
10 | M232201 | 0.86 | -0.13 | .21 | † | † | † | † | |
12 | M232501 | 1.79 | 1.22 | .09 | † | † | † | † | |
14 | M339701 | 1.24 | 1.03 | .11 | † | † | † | † |