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Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 | dj5 |
---|---|---|---|---|---|---|---|---|---|---|
† 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 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 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. In 2014, grades 4 and 12 were not assessed. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2014 Geography Assessment. | ||||||||||
G3 | 1 | G013301 | 0.70 | -1.76 | .24 | † | † | † | † | † |
2 | G013302 | 0.46 | -1.27 | .27 | † | † | † | † | † | |
3 | G013401 | 0.70 | -1.37 | .21 | † | † | † | † | † | |
7 | G013601 | 0.67 | -1.72 | .21 | † | † | † | † | † | |
8 | G013602 | 0.55 | -0.44 | .19 | † | † | † | † | † | |
9 | G013701 | 0.80 | -0.48 | .24 | † | † | † | † | † | |
13 | G014101 | 1.18 | 1.34 | .16 | † | † | † | † | † | |
16 | G014401 | 0.60 | 2.05 | † | 2.13 | -2.13 | † | † | † | |
17 | G014501 | 1.12 | 2.02 | .23 | † | † | † | † | † | |
G4 | 4 | G033201 | 1.22 | 0.68 | .33 | † | † | † | † | † |
11 | G033901 | 1.36 | 1.08 | .26 | † | † | † | † | † | |
15 | G034301 | 0.78 | 0.92 | .28 | † | † | † | † | † | |
16 | G034401 | 1.10 | 0.63 | .43 | † | † | † | † | † | |
G5 | 2 | G050001 | 0.44 | 1.12 | † | 0.45 | -0.45 | † | † | † |
3 | G046701 | 0.56 | -0.22 | † | 1.15 | -1.15 | † | † | † | |
5 | G051301 | 0.79 | 1.55 | .22 | † | † | † | † | † | |
6 | G048701 | 0.80 | 0.47 | .24 | † | † | † | † | † | |
12 | G048601 | 0.71 | 1.32 | .23 | † | † | † | † | † | |
15 | G047001 | 1.23 | 0.81 | .30 | † | † | † | † | † | |
17 | G049801 | 0.99 | -0.71 | .29 | † | † | † | † | † | |
G6 | 1 | G034501 | 0.58 | -0.52 | .23 | † | † | † | † | † |
11 | G035501 | 0.54 | 1.94 | † | 0.27 | 0.29 | -0.57 | † | † | |
G7 | 1 | G051801 | 0.96 | -0.37 | .21 | † | † | † | † | † |
2 | G051601 | 0.29 | -1.21 | † | -3.04 | -0.06 | 3.10 | † | † | |
3 | G051501 | 0.66 | -0.49 | .18 | † | † | † | † | † | |
5 | G052901 | 0.61 | -0.60 | † | 0.49 | -0.49 | † | † | † | |
6 | G052601 | 0.93 | -0.52 | .26 | † | † | † | † | † | |
7 | G053201 | 0.97 | 0.40 | .09 | † | † | † | † | † | |
8 | G052501 | 0.84 | 1.43 | † | -0.57 | 0.57 | † | † | † | |
12 | G052701 | 1.04 | 1.46 | .25 | † | † | † | † | † | |
15 | G053801 | 1.24 | 0.47 | .27 | † | † | † | † | † | |
G8 | 1 | G046101 | 0.68 | 1.48 | .24 | † | † | † | † | † |
2 | G046201 | 0.23 | -1.79 | .25 | † | † | † | † | † | |
3 | G049001 | 0.50 | -1.00 | † | † | † | † | † | † | |
8 | G049201 | 0.90 | 0.50 | .36 | † | † | † | † | † | |
9 | G048901 | 0.67 | 0.49 | .24 | † | † | † | † | † | |
13 | G050101 | 1.08 | -0.11 | .20 | † | † | † | † | † | |
14 | G050102 | 1.23 | 2.70 | .16 | † | † | † | † | † | |
17 | G048201 | 1.11 | 0.85 | .21 | † | † | † | † | † | |
G9 | 1 | G018901 | 0.88 | -0.66 | .16 | † | † | † | † | † |
2 | G019001 | 0.82 | -2.60 | .24 | † | † | † | † | † | |
3 | G019002 | 0.26 | 0.22 | † | -7.63 | 7.63 | † | † | † | |
9 | G019301 | 0.96 | 0.05 | .12 | † | † | † | † | † | |
10 | G019302 | 0.47 | -0.14 | † | 1.24 | -1.24 | † | † | † | |
11 | G019401 | 1.70 | 0.74 | .12 | † | † | † | † | † | |
12 | G019402 | 0.62 | 0.13 | † | 0.20 | -0.20 | † | † | † | |
13 | G019403 | 0.31 | 0.73 | .24 | † | † | † | † | † | |
14 | G019501 | 0.45 | -0.92 | .20 | † | † | † | † | † | |
15 | G019601 | 0.67 | -0.24 | .25 | † | † | † | † | † | |
16 | G019701 | 0.52 | 1.29 | .25 | † | † | † | † | † | |
17 | G019702 | 0.69 | -0.04 | .33 | † | † | † | † | † | |
18 | G019703 | 0.61 | 0.61 | .27 | † | † | † | † | † | |
19 | G019801 | 0.67 | -0.24 | .25 | † | † | † | † | † | |
22 | G020101 | 0.81 | 0.56 | .26 | † | † | † | † | † | |
26 | G020401 | 0.31 | -1.30 | .22 | † | † | † | † | † |