Table of Contents | Search Technical Documentation | References
Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 | dj5 |
---|---|---|---|---|---|---|---|---|---|---|
† 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), 2006 Economics Assessment. |
||||||||||
EA | 3 | E000201 | 0.90 | 0.33 | 0.18 | † | † | † | † | † |
9 | E000801 | 0.83 | 0.89 | 0.15 | † | † | † | † | † | |
10 | E000901 | 0.66 | 0.39 | 0.19 | † | † | † | † | † | |
12 | E001101 | 0.36 | -0.61 | † | 0.06 | 0.63 | -0.69 | † | † | |
15 | E001401 | 1.09 | 0.49 | 0.29 | † | † | † | † | † | |
17 | E001601 | 1.04 | 0.14 | 0.30 | † | † | † | † | † | |
EB | 1 | E001701 | 0.93 | -0.99 | 0.26 | † | † | † | † | † |
3 | E001901 | 0.79 | -1.06 | 0.29 | † | † | † | † | † | |
4 | E002001 | 0.51 | -1.65 | † | 0.13 | -0.13 | † | † | † | |
5 | E002101 | 1.27 | 0.08 | 0.29 | † | † | † | † | † | |
6 | E002201 | 1.73 | 0.26 | 0.26 | † | † | † | † | † | |
10 | E002601 | 1.07 | 0.83 | 0.25 | † | † | † | † | † | |
11 | E002701 | 0.97 | 0.29 | 0.27 | † | † | † | † | † | |
12 | E002801 | 1.21 | -0.12 | 0.24 | † | † | † | † | † | |
13 | E002901 | 0.53 | -0.62 | † | 0.38 | -0.38 | † | † | † | |
EC | 1 | E003501 | 1.01 | -0.45 | 0.28 | † | † | † | † | † |
3 | E003701 | 0.77 | 0.45 | 0.24 | † | † | † | † | † | |
5 | E003901 | 0.61 | -0.12 | † | 0.54 | -0.54 | † | † | † | |
6 | E004001 | 1.26 | 1.19 | 0.22 | † | † | † | † | † | |
8 | E004201 | 1.04 | 0.83 | † | 1.00 | -1.00 | † | † | † | |
10 | E004401 | 0.85 | 0.02 | 0.29 | † | † | † | † | † | |
14 | E004801 | 1.12 | -0.71 | 0.32 | † | † | † | † | † | |
17 | E005101 | 1.09 | 0.97 | † | † | † | † | † | † | |
18 | E005201 | 1.10 | -0.17 | 0.37 | † | † | † | † | † | |
ED | 1 | E005401 | 1.08 | 0.52 | 0.24 | † | † | † | † | † |
2 | E005501 | 1.66 | 0.87 | 0.18 | † | † | † | † | † | |
4 | E005701 | 0.82 | 0.06 | † | 1.64 | -1.64 | † | † | † | |
6 | E005901 | 0.50 | -1.27 | 0.27 | † | † | † | † | † | |
9 | E006201 | 0.30 | -0.12 | † | 0.76 | -0.64 | -0.12 | † | † | |
11 | E006401 | 0.61 | -0.64 | 0.19 | † | † | † | † | † | |
15 | E006801 | 0.80 | 1.13 | 0.38 | † | † | † | † | † | |
17 | E007001 | 1.75 | 1.27 | 0.27 | † | † | † | † | † | |
EE | 5 | E007601 | 1.02 | 0.20 | 0.28 | † | † | † | † | † |
6 | E007701 | 0.94 | 0.16 | 0.43 | † | † | † | † | † | |
9 | E008001 | 0.37 | 0.09 | † | 1.01 | -1.01 | † | † | † | |
12 | E008301 | 1.38 | 1.03 | 0.29 | † | † | † | † | † | |
13 | E008401 | 0.67 | 0.30 | † | 0.59 | -0.59 | † | † | † | |
16 | E008701 | 1.07 | -0.16 | 0.31 | † | † | † | † | † | |
17 | E008801 | 1.94 | 0.29 | 0.22 | † | † | † | † | † | |
18 | E008901 | 0.82 | -0.42 | 0.23 | † | † | † | † | † | |
20 | E009101 | 0.80 | 0.92 | 0.29 | † | † | † | † | † | |
21 | E009201 | 0.80 | 0.60 | 0.29 | † | † | † | † | † | |
EF | 1 | E009301 | 1.12 | -0.80 | 0.30 | † | † | † | † | † |
2 | E009401 | 1.32 | -0.27 | 0.24 | † | † | † | † | † | |
4 | E009601 | 0.72 | -0.79 | 0.27 | † | † | † | † | † | |
5 | E009701 | 0.36 | 1.75 | † | 1.68 | -1.68 | † | † | † | |
8 | E010001 | 2.43 | 1.19 | 0.21 | † | † | † | † | † | |
13 | E010501 | 1.23 | 0.42 | 0.31 | † | † | † | † | † | |
14 | E010601 | 0.45 | -0.07 | † | 0.66 | -0.66 | † | † | † | |
15 | E010701 | 1.10 | -0.92 | 0.24 | † | † | † | † | † | |
16 | E010801 | 0.77 | 1.06 | 0.33 | † | † | † | † | † | |
17 | E010901 | 0.94 | 0.31 | 0.24 | † | † | † | † | † | |
EG | 2 | E011201 | 1.07 | -0.06 | 0.25 | † | † | † | † | † |
5 | E011501 | 0.53 | -0.20 | 0.25 | † | † | † | † | † | |
9 | E011901 | 0.60 | 1.34 | † | 2.90 | 0.52 | -3.42 | † | † | |
14 | E012401 | 1.34 | 1.12 | 0.24 | † | † | † | † | † | |
16 | E012601 | 1.45 | -0.06 | 0.34 | † | † | † | † | † | |
17 | E012701 | 1.59 | -0.15 | 0.21 | † | † | † | † | † | |
18 | E012801 | 1.45 | -0.56 | 0.20 | † | † | † | † | † | |
EH | 2 | E013001 | 0.62 | -0.14 | 0.24 | † | † | † | † | † |
3 | E013101 | 1.33 | 0.97 | 0.14 | † | † | † | † | † | |
11 | E013901 | 1.35 | -0.39 | 0.27 | † | † | † | † | † | |
12 | E014001 | 1.07 | -0.33 | 0.27 | † | † | † | † | † | |
13 | E014101 | 0.62 | -1.41 | † | † | † | † | † | † | |
14 | E014201 | 1.01 | 0.13 | 0.20 | † | † | † | † | † | |
15 | E014301 | 1.36 | 0.19 | 0.15 | † | † | † | † | † | |
16 | E014401 | 1.84 | 0.77 | 0.26 | † | † | † | † | † | |
17 | E014501 | 1.12 | 0.96 | 0.18 | † | † | † | † | † | |
20 | E014801 | 0.98 | 0.83 | 0.29 | † | † | † | † | † | |
EI | 1 | E014901 | 0.84 | -0.38 | 0.35 | † | † | † | † | † |
5 | E015301 | 1.10 | -0.71 | 0.22 | † | † | † | † | † | |
7 | E015501 | 1.73 | 0.33 | 0.28 | † | † | † | † | † | |
10 | E015801 | 1.02 | 0.40 | 0.20 | † | † | † | † | † | |
11 | E015901 | 1.23 | 1.06 | 0.23 | † | † | † | † | † | |
13 | E016101 | 0.64 | -0.73 | † | 0.35 | -0.35 | † | † | † | |
14 | E016201 | 0.99 | 0.69 | 0.14 | † | † | † | † | † | |
15 | E016301 | 1.80 | 1.12 | 0.34 | † | † | † | † | † | |
18 | E016601 | 1.07 | -0.42 | 0.24 | † | † | † | † | † | |
20 | E016801 | 0.60 | -1.77 | 0.25 | † | † | † | † | † | |
EJ | 1 | E016901 | 1.03 | -0.76 | 0.32 | † | † | † | † | † |
4 | E017201 | 0.62 | 0.62 | † | 1.64 | -1.64 | † | † | † | |
7 | E017501 | 0.80 | 0.41 | 0.18 | † | † | † | † | † | |
8 | E017601 | 1.41 | 0.30 | 0.18 | † | † | † | † | † | |
10 | E017801 | 1.16 | 1.66 | 0.23 | † | † | † | † | † | |
11 | E017901 | 0.65 | -1.75 | 0.27 | † | † | † | † | † | |
12 | E018001 | 0.92 | 0.84 | 0.30 | † | † | † | † | † | |
17 | E018501 | 1.63 | -0.03 | 0.31 | † | † | † | † | † |