Table of Contents | Search Technical Documentation | References
Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 |
---|---|---|---|---|---|---|---|---|---|
C1 | 1 | P042169 | 0.88 | -0.52 | 0.31 | † | † | † | † |
2 | P042170 | 0.44 | -0.61 | 0.22 | † | † | † | † | |
3 | P042171 | 0.58 | -0.03 | † | 1.05 | -1.05 | † | † | |
4 | P042172 | 0.60 | 1.24 | 0.19 | † | † | † | † | |
5 | P051201 | 0.53 | -0.89 | 0.22 | † | † | † | † | |
6 | P042174 | 0.78 | 1.84 | † | 0.60 | -0.60 | † | † | |
7 | P042175 | 0.49 | -1.35 | 0.24 | † | † | † | † | |
8 | P042176 | 0.37 | 1.01 | 0.28 | † | † | † | † | |
9 | P042177 | 0.65 | -1.10 | † | † | † | † | † | |
11 | P053901 | 1.05 | 0.26 | 0.21 | † | † | † | † | |
12 | P051501 | 0.83 | -0.19 | 0.14 | † | † | † | † | |
13 | P042181 | 0.52 | 0.49 | † | 0.90 | -0.90 | † | † | |
14 | P042182 | 0.91 | -1.58 | 0.34 | † | † | † | † | |
15 | P042183 | 0.82 | 1.05 | 0.39 | † | † | † | † | |
16 | P042184 | 0.51 | -0.34 | † | 0.65 | -0.65 | † | † | |
17 | P042185 | 0.91 | 0.90 | 0.29 | † | † | † | † | |
18 | P042186 | 1.35 | -0.87 | 0.33 | † | † | † | † | |
19 | P042187 | 0.81 | 0.49 | 0.19 | † | † | † | † | |
20 | P042188 | 0.93 | -0.30 | 0.25 | † | † | † | † | |
21 | P051601 | 1.24 | 0.27 | 0.22 | † | † | † | † | |
23 | P041202 | 0.66 | 0.27 | † | 0.37 | -0.37 | † | † | |
24 | P041210 | 0.79 | -0.27 | 0.24 | † | † | † | † | |
25 | P051901 | 0.80 | 1.05 | 0.20 | † | † | † | † | |
26 | P041214 | 1.44 | 1.80 | 0.32 | † | † | † | † | |
C2 | 1 | P042150 | 0.97 | -0.66 | 0.36 | † | † | † | † |
2 | P042151 | 1.13 | 0.54 | 0.23 | † | † | † | † | |
3 | P042152 | 1.06 | -0.32 | † | † | † | † | † | |
4 | P042153 | 0.93 | 0.60 | 0.32 | † | † | † | † | |
5 | P042154 | 1.13 | -0.25 | 0.23 | † | † | † | † | |
6 | P049501 | 0.78 | 0.16 | † | † | † | † | † | |
7 | P042156 | 1.21 | 0.53 | 0.21 | † | † | † | † | |
8 | P042157 | 1.27 | -0.09 | 0.19 | † | † | † | † | |
9 | P042158 | 0.51 | 0.46 | † | 1.36 | -1.36 | † | † | |
10 | P052901 | 0.81 | 1.76 | 0.25 | † | † | † | † | |
11 | P042160 | 1.43 | 0.86 | 0.24 | † | † | † | † | |
12 | P042161 | 1.70 | 0.05 | 0.27 | † | † | † | † | |
13 | P042162 | 0.81 | 0.88 | † | 0.20 | -0.20 | † | † | |
14 | P042163 | 1.59 | 1.19 | 0.32 | † | † | † | † | |
15 | P042164 | 0.80 | 1.51 | 0.21 | † | † | † | † | |
16 | P042165 | 1.54 | 0.12 | 0.19 | † | † | † | † | |
17 | P042166 | 1.00 | 0.60 | 0.44 | † | † | † | † | |
18 | P042167 | 1.09 | -1.16 | 0.31 | † | † | † | † | |
19 | P042168 | 1.00 | 0.44 | 0.37 | † | † | † | † | |
20 | P041203 | 0.75 | -0.93 | 0.26 | † | † | † | † | |
21 | P041204 | 0.45 | 0.97 | 0.26 | † | † | † | † | |
22 | P051401 | 0.62 | 1.29 | † | 0.74 | -0.74 | † | † | |
23 | P050701 | 0.68 | 0.30 | 0.35 | † | † | † | † | |
24 | P055101 | 0.93 | -0.22 | 0.21 | † | † | † | † | |
25 | P049901 | 1.42 | -0.03 | 0.20 | † | † | † | † | |
28 | P041201 | 0.67 | 0.54 | 0.22 | † | † | † | † | |
C3 | 1 | P041301 | 1.47 | 0.58 | 0.33 | † | † | † | † |
2 | P041302 | 1.13 | 0.56 | 0.30 | † | † | † | † | |
3 | P041303 | 1.62 | 0.19 | 0.32 | † | † | † | † | |
4 | P041304 | 1.19 | -0.68 | 0.25 | † | † | † | † | |
5 | P062802 | 1.34 | 1.05 | 0.21 | † | † | † | † | |
6 | P062801 | 0.92 | -0.94 | 0.23 | † | † | † | † | |
7 | P041205 | 0.42 | -2.69 | † | † | † | † | † | |
8 | P041308 | 1.80 | 1.41 | 0.17 | † | † | † | † | |
9 | P041309 | 0.79 | 1.34 | † | † | † | † | † | |
10 | P041310 | 1.61 | 0.76 | 0.25 | † | † | † | † | |
11 | P041311 | 0.37 | 1.19 | 0.29 | † | † | † | † | |
12 | P041312 | 0.72 | 1.86 | 0.20 | † | † | † | † | |
13 | P041313 | 0.65 | -0.80 | 0.25 | † | † | † | † | |
14 | P041314 | 1.02 | 0.70 | 0.17 | † | † | † | † | |
15 | P041315 | 0.44 | -0.31 | † | 0.54 | -0.54 | † | † | |
16 | P041316 | 1.06 | 0.54 | 0.25 | † | † | † | † | |
17 | P041317 | 1.29 | 0.66 | 0.21 | † | † | † | † | |
18 | P041318 | 0.90 | 0.23 | 0.22 | † | † | † | † | |
19 | P041319 | 0.58 | 0.61 | 0.24 | † | † | † | † | |
20 | P052101 | 0.42 | 1.73 | † | 1.06 | 0.31 | -1.36 | † | |
21 | P041217 | 0.56 | 1.31 | 0.29 | † | † | † | † | |
22 | P041215 | 1.21 | -0.45 | 0.21 | † | † | † | † | |
23 | P041216 | 1.51 | 0.33 | 0.15 | † | † | † | † | |
24 | P041206 | 0.95 | 0.34 | 0.13 | † | † | † | † | |
25 | P041209 | 1.59 | 0.89 | 0.32 | † | † | † | † | |
26 | P053401 | 1.30 | 1.04 | 0.26 | † | † | † | † | |
C4 | 1 | P040901 | 0.85 | -0.66 | 0.32 | † | † | † | † |
2 | P040902 | 1.06 | 1.08 | 0.14 | † | † | † | † | |
3 | P040903 | 0.51 | 0.48 | † | 0.20 | -0.20 | † | † | |
4 | P040904 | 1.10 | 0.37 | 0.23 | † | † | † | † | |
5 | P053701 | 1.05 | 0.09 | 0.42 | † | † | † | † | |
6 | P040906 | 1.17 | 1.77 | † | † | † | † | † | |
7 | P040907 | 0.79 | 1.16 | 0.23 | † | † | † | † | |
8 | P040908 | 1.01 | -0.17 | 0.25 | † | † | † | † | |
9 | P040909 | 1.28 | -0.33 | 0.29 | † | † | † | † | |
10 | P040910 | 0.53 | 1.52 | † | 1.15 | -1.15 | † | † | |
11 | P040911 | 0.43 | 1.04 | 0.29 | † | † | † | † | |
12 | P040912 | 1.24 | 1.45 | 0.19 | † | † | † | † | |
13 | P040913 | 0.67 | 0.50 | † | 0.44 | -0.44 | † | † | |
14 | P040914 | 1.17 | 0.56 | 0.18 | † | † | † | † | |
15 | P040915 | 2.03 | 1.51 | 0.30 | † | † | † | † | |
16 | P040916 | 1.03 | 1.00 | 0.16 | † | † | † | † | |
17 | P050501 | 0.58 | 1.17 | † | 0.35 | 0.40 | -0.75 | † | |
18 | P052301 | 1.06 | 0.81 | 0.30 | † | † | † | † | |
19 | P040919 | 1.32 | 0.28 | 0.22 | † | † | † | † | |
20 | P053801 | 0.57 | 2.91 | † | † | † | † | † | |
21 | P054901 | 1.29 | 0.22 | 0.18 | † | † | † | † | |
22 | P053301 | 0.94 | -0.99 | 0.27 | † | † | † | † | |
23 | P048701 | 1.20 | 0.87 | 0.21 | † | † | † | † | |
24 | P049401 | 1.73 | 1.63 | 0.34 | † | † | † | † | |
C5 | 1 | P041101 | 0.66 | -0.65 | 0.32 | † | † | † | † |
2 | P041102 | 0.56 | 1.42 | † | 0.28 | -0.28 | † | † | |
3 | P041103 | 0.84 | 0.44 | 0.16 | † | † | † | † | |
4 | P041104 | 0.64 | 2.14 | 0.28 | † | † | † | † | |
5 | P041105 | 0.62 | 1.27 | 0.29 | † | † | † | † | |
6 | P041106 | 0.51 | 0.41 | † | † | † | † | † | |
7 | P041107 | 1.10 | 0.10 | 0.32 | † | † | † | † | |
8 | P041108 | 1.24 | -0.18 | 0.21 | † | † | † | † | |
9 | P041218 | 1.42 | 0.64 | 0.36 | † | † | † | † | |
10 | P041110 | 0.60 | 1.65 | 0.27 | † | † | † | † | |
11 | P041111 | 1.01 | 1.17 | † | 0.21 | -0.21 | † | † | |
12 | P041112 | 0.45 | -1.12 | 0.32 | † | † | † | † | |
13 | P041113 | 0.78 | 0.40 | 0.35 | † | † | † | † | |
14 | P041114 | 1.09 | 2.14 | 0.11 | † | † | † | † | |
15 | P041115 | 1.08 | 1.27 | 0.22 | † | † | † | † | |
16 | P041116 | 0.83 | 0.91 | † | 0.48 | -0.48 | † | † | |
17 | P041117 | 1.00 | -1.13 | 0.33 | † | † | † | † | |
18 | P041118 | 2.10 | 1.31 | 0.23 | † | † | † | † | |
19 | P041119 | 0.90 | 0.01 | 0.33 | † | † | † | † | |
20 | P049101 | 1.26 | 1.41 | 0.29 | † | † | † | † | |
22 | P041219 | 1.02 | -0.46 | 0.26 | † | † | † | † | |
23 | P041208 | 0.86 | 0.30 | 0.31 | † | † | † | † | |
24 | P054301 | 1.02 | 1.21 | 0.43 | † | † | † | † | |
C6 | 1 | P0652MS | 0.72 | -0.26 | † | † | † | † | † |
2 | P065501 | 0.30 | -1.03 | † | -0.83 | 0.83 | † | † | |
3 | P0636MS | 0.49 | -0.86 | † | † | † | † | † | |
4 | P069401 | 0.67 | -1.02 | 0.31 | † | † | † | † | |
5 | P064201 | 0.43 | -0.80 | † | 0.60 | -0.50 | -0.09 | † | |
6 | P066301 | 1.10 | 0.06 | 0.33 | † | † | † | † | |
7 | P068001 | 0.65 | 0.41 | † | 0.48 | -0.48 | † | † | |
8 | P0657MS | 0.94 | 0.48 | † | † | † | † | † | |
9 | P070801 | 0.89 | -1.98 | † | † | † | † | † | |
10 | P0709MS | 0.38 | -0.99 | † | 2.57 | -2.57 | † | † | |
11 | P066501 | 0.55 | -0.09 | † | 0.08 | -0.08 | † | † | |
12 | P067601 | 0.96 | 1.44 | † | † | † | † | † | |
13 | P068701 | 0.98 | 1.19 | 0.35 | † | † | † | † | |
15 | P0689MS | 0.98 | 0.78 | † | † | † | † | † | |
16 | P064701 | 1.26 | 0.29 | 0.28 | † | † | † | † | |
17 | P070301 | 1.34 | 0.34 | 0.33 | † | † | † | † | |
18 | P070201 | 0.71 | 1.08 | † | 0.48 | -0.48 | † | † | |
19 | P0677MS | 0.46 | -0.02 | † | 1.31 | -1.31 | † | † | |
20 | P066601 | 1.21 | -0.46 | 0.26 | † | † | † | † | |
C7 | 1 | P0656MS | 0.37 | -1.53 | † | † | † | † | † |
2 | P063001 | 0.86 | -0.96 | 0.26 | † | † | † | † | |
3 | P066201 | 0.36 | -1.39 | † | -1.26 | 1.26 | † | † | |
4 | P069201 | 0.61 | 1.43 | 0.28 | † | † | † | † | |
5 | P064601 | 0.57 | 1.37 | † | 0.68 | -0.68 | † | † | |
6 | P0650MS | 0.66 | -0.74 | † | 0.76 | -0.76 | † | † | |
7 | P069101 | 0.63 | 0.04 | † | 0.15 | -0.15 | † | † | |
8 | P0678MS | 0.67 | 0.86 | † | † | † | † | † | |
9 | P0679MS | 0.66 | 0.74 | † | † | † | † | † | |
10 | P0659CL | 0.53 | 0.80 | † | 1.01 | 0.57 | -1.58 | † | |
13 | P069301 | 1.12 | -0.26 | 0.20 | † | † | † | † | |
14 | P0714MS | 0.63 | -0.56 | † | 0.41 | -0.41 | † | † | |
15 | P071101 | 1.19 | 0.45 | 0.30 | † | † | † | † | |
16 | P0637CL | 0.63 | 1.17 | † | -0.07 | 0.07 | † | † | |
17 | P063301 | 1.55 | 0.86 | 0.35 | † | † | † | † | |
18 | P063801 | 0.87 | 0.36 | 0.29 | † | † | † | † | |
19 | P067101 | 0.67 | 0.47 | † | -0.13 | 0.13 | † | † | |
20 | P070601 | 1.21 | 0.23 | 0.22 | † | † | † | † | |
† Not applicable; c parameters are not estimated for the two-parameter logistic or generalized partial credit models, and d parameters are not estimated for two-parameter or three-parameter logistic models. NOTE: DBA = Digitally based assessment. 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. The block naming conventions used in this table are described in the document 2018 Block Naming Conventions in Data Products and TDW . SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2018 Civics Assessment. |
Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 |
---|---|---|---|---|---|---|---|---|---|
C3 | 1 | P042169 | 0.68 | -1.21 | 0.27 | † | † | † | † |
2 | P042170 | 0.39 | -0.72 | 0.21 | † | † | † | † | |
3 | P042171 | 0.55 | -0.28 | † | 0.85 | -0.85 | † | † | |
4 | P042172 | 0.60 | 1.35 | 0.20 | † | † | † | † | |
5 | P042173 | 0.76 | 1.10 | 0.33 | † | † | † | † | |
6 | P042174 | 0.93 | 2.02 | † | 0.70 | -0.70 | † | † | |
7 | P042175 | 0.39 | -1.64 | 0.26 | † | † | † | † | |
8 | P042176 | 0.37 | 0.69 | 0.23 | † | † | † | † | |
9 | P042177 | 0.41 | -0.58 | † | 0.18 | -0.18 | † | † | |
10 | P042178 | 1.60 | 0.93 | 0.27 | † | † | † | † | |
11 | P042179 | 2.05 | 1.05 | 0.21 | † | † | † | † | |
12 | P042180 | 0.41 | 1.07 | 0.24 | † | † | † | † | |
13 | P042181 | 0.49 | 0.69 | † | 0.95 | -0.95 | † | † | |
14 | P042182 | 0.75 | -1.95 | 0.33 | † | † | † | † | |
15 | P042183 | 0.76 | 1.21 | 0.34 | † | † | † | † | |
16 | P042184 | 0.52 | -0.61 | † | 1.02 | -1.02 | † | † | |
17 | P042185 | 0.70 | 1.02 | 0.28 | † | † | † | † | |
18 | P042186 | 1.15 | -0.86 | 0.37 | † | † | † | † | |
19 | P042187 | 0.71 | 0.56 | 0.17 | † | † | † | † | |
20 | P042188 | 1.40 | 0.16 | 0.41 | † | † | † | † | |
C4 | 1 | P048301 | 1.47 | 1.19 | 0.37 | † | † | † | † |
2 | P048401 | 0.79 | -0.43 | 0.53 | † | † | † | † | |
3 | P048701 | 1.43 | 0.71 | 0.24 | † | † | † | † | |
4 | P053801 | 0.33 | 1.92 | † | -0.80 | 0.80 | † | † | |
5 | P051501 | 0.76 | -0.29 | 0.25 | † | † | † | † | |
6 | P053401 | 1.08 | 0.57 | 0.20 | † | † | † | † | |
7 | P051401 | 0.57 | 1.12 | † | 0.98 | -0.98 | † | † | |
9 | P050601 | 0.62 | 0.06 | 0.23 | † | † | † | † | |
10 | P049101 | 1.60 | 1.00 | 0.26 | † | † | † | † | |
11 | P049401 | 1.50 | 1.21 | 0.31 | † | † | † | † | |
12 | P052101 | 0.43 | 1.70 | † | 1.23 | 0.00 | -1.23 | † | |
13 | P054401 | 1.24 | 1.73 | 0.47 | † | † | † | † | |
14 | P051201 | 0.56 | -0.56 | 0.22 | † | † | † | † | |
15 | P054101 | 0.64 | 0.10 | † | 1.15 | -1.15 | † | † | |
16 | P054601 | 0.76 | 0.39 | 0.26 | † | † | † | † | |
17 | P052901 | 0.95 | 1.51 | 0.27 | † | † | † | † | |
18 | P049901 | 1.44 | -0.16 | 0.19 | † | † | † | † | |
C5 | 1 | P040901 | 0.62 | -1.18 | 0.33 | † | † | † | † |
2 | P040902 | 1.14 | 1.02 | 0.14 | † | † | † | † | |
3 | P040903 | 0.61 | 1.66 | † | † | † | † | † | |
4 | P040904 | 1.09 | 0.20 | 0.14 | † | † | † | † | |
5 | P040905 | 1.18 | 0.32 | 0.30 | † | † | † | † | |
6 | P040906 | 0.61 | 1.63 | † | -0.66 | 0.66 | † | † | |
7 | P040907 | 0.81 | 0.86 | 0.22 | † | † | † | † | |
8 | P040908 | 0.81 | -0.35 | 0.22 | † | † | † | † | |
9 | P040909 | 1.34 | -0.46 | 0.26 | † | † | † | † | |
10 | P040910 | 0.45 | 1.83 | † | 1.45 | -1.45 | † | † | |
11 | P040911 | 0.43 | 1.17 | 0.32 | † | † | † | † | |
12 | P040912 | 1.46 | 1.48 | 0.23 | † | † | † | † | |
13 | P040913 | 0.75 | 0.52 | † | 0.71 | -0.71 | † | † | |
14 | P040914 | 0.96 | 0.64 | 0.18 | † | † | † | † | |
15 | P040915 | 1.24 | 1.39 | 0.28 | † | † | † | † | |
16 | P040916 | 1.18 | 0.99 | 0.24 | † | † | † | † | |
17 | P040917 | 0.83 | 0.77 | 0.15 | † | † | † | † | |
18 | P040918 | 1.01 | 0.03 | 0.37 | † | † | † | † | |
19 | P040919 | 1.26 | 0.27 | 0.23 | † | † | † | † | |
C6 | 1 | P053901 | 1.22 | 0.42 | 0.24 | † | † | † | † |
2 | P052301 | 0.72 | 0.81 | 0.26 | † | † | † | † | |
3 | P049201 | 0.57 | -0.17 | † | 0.73 | -0.73 | † | † | |
4 | P049001 | 0.66 | 0.78 | 0.29 | † | † | † | † | |
5 | P054301 | 0.84 | 0.93 | 0.40 | † | † | † | † | |
6 | P050501 | 0.49 | 0.87 | † | 0.30 | 0.36 | -0.66 | † | |
7 | P052201 | 1.08 | 0.01 | 0.23 | † | † | † | † | |
8 | P053701 | 0.79 | -0.26 | 0.33 | † | † | † | † | |
9 | P049501 | 0.68 | 0.86 | † | 0.28 | -0.28 | † | † | |
10 | P051601 | 1.31 | 0.22 | 0.17 | † | † | † | † | |
11 | P050401 | 1.32 | 0.87 | 0.32 | † | † | † | † | |
12 | P055101 | 0.77 | -0.15 | 0.24 | † | † | † | † | |
13 | P054801 | 0.55 | 0.78 | † | -0.88 | 0.88 | † | † | |
14 | P054901 | 1.13 | 0.03 | 0.22 | † | † | † | † | |
15 | P050701 | 0.61 | 0.65 | 0.36 | † | † | † | † | |
16 | P062201 | 0.68 | 0.83 | † | 0.79 | -0.79 | † | † | |
17 | P051901 | 0.98 | 1.09 | 0.24 | † | † | † | † | |
18 | P053301 | 0.97 | -1.12 | 0.27 | † | † | † | † | |
19 | P052601 | 1.05 | -0.28 | 0.34 | † | † | † | † | |
C7 | 1 | P041101 | 0.39 | -1.33 | 0.25 | † | † | † | † |
2 | P041102 | 0.54 | 1.53 | † | 0.46 | -0.46 | † | † | |
3 | P041103 | 1.02 | 0.35 | 0.18 | † | † | † | † | |
4 | P041104 | 1.45 | 1.24 | 0.28 | † | † | † | † | |
5 | P041105 | 0.72 | 1.18 | 0.25 | † | † | † | † | |
6 | P041106 | 0.45 | 1.89 | † | 1.86 | -1.86 | † | † | |
7 | P041107 | 1.36 | 0.16 | 0.39 | † | † | † | † | |
8 | P041108 | 0.93 | -0.16 | 0.25 | † | † | † | † | |
10 | P041110 | 1.99 | 1.39 | 0.31 | † | † | † | † | |
11 | P041111 | 0.87 | 1.12 | † | 0.20 | -0.20 | † | † | |
12 | P041112 | 0.40 | -1.61 | 0.27 | † | † | † | † | |
13 | P041113 | 0.96 | 0.66 | 0.38 | † | † | † | † | |
15 | P041115 | 1.07 | 1.34 | 0.20 | † | † | † | † | |
16 | P041116 | 0.83 | 0.99 | † | 0.63 | -0.63 | † | † | |
17 | P041117 | 0.85 | -1.25 | 0.29 | † | † | † | † | |
18 | P041118 | 1.51 | 1.34 | 0.23 | † | † | † | † | |
19 | P041119 | 1.11 | 0.16 | 0.34 | † | † | † | † | |
C8 | 1 | P041201 | 0.55 | 0.13 | 0.25 | † | † | † | † |
2 | P041202 | 0.70 | 0.19 | † | 0.50 | -0.50 | † | † | |
3 | P041203 | 0.47 | -1.82 | 0.28 | † | † | † | † | |
5 | P041205 | 0.23 | -1.67 | † | -1.39 | 1.39 | † | † | |
6 | P041206 | 1.03 | 0.22 | 0.17 | † | † | † | † | |
7 | P041207 | 1.21 | 1.00 | 0.23 | † | † | † | † | |
8 | P041208 | 0.77 | 0.19 | 0.30 | † | † | † | † | |
9 | P041209 | 1.19 | 0.58 | 0.30 | † | † | † | † | |
10 | P041210 | 0.53 | -0.20 | 0.25 | † | † | † | † | |
11 | P041211 | 0.69 | 1.79 | 0.27 | † | † | † | † | |
12 | P041212 | 0.96 | 0.21 | 0.26 | † | † | † | † | |
13 | P041213 | 0.54 | 1.69 | † | 1.18 | 0.75 | -1.93 | † | |
14 | P041214 | 1.71 | 1.39 | 0.32 | † | † | † | † | |
15 | P041215 | 1.03 | -0.43 | 0.23 | † | † | † | † | |
16 | P041216 | 1.47 | 0.52 | 0.18 | † | † | † | † | |
17 | P041217 | 0.53 | 1.47 | 0.27 | † | † | † | † | |
18 | P041218 | 1.41 | 0.78 | 0.34 | † | † | † | † | |
19 | P041219 | 0.96 | -0.56 | 0.21 | † | † | † | † | |
C9 | 1 | P041301 | 1.04 | 0.39 | 0.41 | † | † | † | † |
2 | P041302 | 0.95 | 0.31 | 0.21 | † | † | † | † | |
3 | P041303 | 1.42 | 0.02 | 0.29 | † | † | † | † | |
4 | P041304 | 1.76 | -0.35 | 0.34 | † | † | † | † | |
5 | P062802 | 1.21 | 0.81 | 0.16 | † | † | † | † | |
6 | P062801 | 0.99 | -0.88 | 0.29 | † | † | † | † | |
7 | P041307 | 0.87 | 0.84 | † | 0.98 | -0.63 | -0.34 | † | |
8 | P041308 | 1.47 | 1.42 | 0.16 | † | † | † | † | |
9 | P041309 | 0.79 | 1.17 | † | † | † | † | † | |
10 | P041310 | 1.60 | 0.67 | 0.26 | † | † | † | † | |
11 | P041311 | 0.35 | 0.74 | 0.25 | † | † | † | † | |
12 | P041312 | 0.73 | 1.97 | 0.19 | † | † | † | † | |
13 | P041313 | 0.86 | -0.74 | 0.29 | † | † | † | † | |
14 | P041314 | 1.19 | 0.84 | 0.24 | † | † | † | † | |
15 | P041315 | 0.48 | -0.38 | † | 0.64 | -0.64 | † | † | |
16 | P041316 | 1.35 | 0.39 | 0.29 | † | † | † | † | |
17 | P041317 | 1.09 | 0.63 | 0.17 | † | † | † | † | |
18 | P041318 | 0.87 | 0.33 | 0.24 | † | † | † | † | |
19 | P041319 | 0.55 | 0.42 | 0.22 | † | † | † | † | |
C10 | 1 | P042150 | 0.82 | -0.91 | 0.40 | † | † | † | † |
2 | P042151 | 1.30 | 0.31 | 0.24 | † | † | † | † | |
3 | P042152 | 0.64 | 0.22 | † | 0.66 | -0.66 | † | † | |
4 | P042153 | 1.27 | 0.72 | 0.36 | † | † | † | † | |
5 | P042154 | 1.16 | -0.37 | 0.25 | † | † | † | † | |
6 | P042155 | 0.60 | -0.04 | † | 0.92 | 0.48 | -1.41 | † | |
7 | P042156 | 1.46 | 0.44 | 0.17 | † | † | † | † | |
8 | P042157 | 1.39 | 0.02 | 0.24 | † | † | † | † | |
9 | P042158 | 0.44 | 0.49 | † | 1.54 | -1.54 | † | † | |
10 | P042159 | 1.39 | 1.48 | 0.19 | † | † | † | † | |
11 | P042160 | 0.99 | 0.90 | 0.30 | † | † | † | † | |
12 | P042161 | 1.48 | 0.04 | 0.22 | † | † | † | † | |
13 | P042162 | 0.83 | 0.88 | † | 0.19 | -0.19 | † | † | |
14 | P042163 | 1.50 | 1.02 | 0.28 | † | † | † | † | |
15 | P042164 | 0.79 | 1.56 | 0.21 | † | † | † | † | |
16 | P042165 | 1.29 | 0.09 | 0.17 | † | † | † | † | |
17 | P042166 | 0.84 | 0.50 | 0.34 | † | † | † | † | |
18 | P042167 | 1.01 | -1.09 | 0.42 | † | † | † | † | |
19 | P042168 | 0.96 | 0.22 | 0.35 | † | † | † | † | |
† Not applicable; c parameters are not estimated for the two-parameter logistic or generalized partial credit models, and d parameters are not estimated for two-parameter or three-parameter logistic models. NOTE: PBA = Paper-based assessment. 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. The block naming conventions used in this table are described in the document 2018 Block Naming Conventions in Data Products and TDW . SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2018 Civics Assessment. |