Table of Contents | Search Technical Documentation | References
Block | Item | NAEP ID | aj | bj | cj |
---|---|---|---|---|---|
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. The c parameter value is exactly zero for items scaled with the two-parameter logistic model. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2004 Mathematics Long-Term Trend Assessment. |
|||||
M21 | 1 | N291601 | 0.86 | -0.57 | 0.11 |
2 | N291701 | 0.83 | -1.03 | 0.24 | |
3 | N291801 | 1.26 | 2.33 | 0.14 | |
4 | N291901 | 0.40 | 1.62 | 0.19 | |
5 | N292001 | 0.70 | -0.63 | 0.11 | |
6 | N292101 | 1.08 | -0.80 | 0.00 | |
7 | N292201 | 0.83 | 1.14 | 0.18 | |
8 | N292301 | 0.84 | 0.39 | 0.32 | |
9 | N292401 | 0.59 | -0.41 | 0.00 | |
10 | N292501 | 1.33 | 0.92 | 0.42 | |
11 | N292601 | 1.39 | 0.10 | 0.14 | |
12 | N292701 | 1.12 | -0.81 | 0.29 | |
13 | N292801 | 0.89 | -1.15 | 0.27 | |
14 | N292901 | 1.31 | -0.79 | 0.12 | |
15 | N293001 | 0.90 | -0.42 | 0.00 | |
16 | N293101 | 1.09 | -1.94 | 0.12 | |
17 | N293201 | 1.22 | 0.76 | 0.18 | |
18 | N293301 | 0.87 | -0.92 | 0.00 | |
19 | N293401 | 0.91 | -1.11 | 0.19 | |
20 | N293501 | 0.68 | -0.88 | 0.00 | |
21 | N293601 | 1.75 | 0.89 | 0.21 | |
22 | N293701 | 1.65 | 0.22 | 0.09 | |
23 | N293801 | 1.51 | 0.67 | 0.21 | |
M22 | 1 | N293901 | 1.12 | -1.15 | 0.13 |
2 | N294001 | 0.87 | -2.35 | 0.16 | |
3 | N294101 | 0.86 | -1.35 | 0.27 | |
4 | N294201 | 0.80 | -2.99 | 0.00 | |
5 | N294301 | 0.90 | -0.96 | 0.00 | |
6 | N294401 | 0.84 | -0.81 | 0.19 | |
7 | N294501 | 0.93 | -0.59 | 0.10 | |
8 | N294601 | 1.30 | 0.05 | 0.20 | |
9 | N294701 | 0.48 | -2.24 | 0.17 | |
10 | N294801 | 1.61 | 1.59 | 0.14 | |
11 | N294901 | 0.75 | 0.02 | 0.21 | |
12 | N295001 | 0.68 | -1.93 | 0.17 | |
13 | N295101 | 1.14 | -0.31 | 0.16 | |
14 | N295201 | 1.19 | -0.11 | 0.19 | |
15 | N295301 | 1.09 | -1.13 | 0.00 | |
16 | N295401 | 0.99 | -0.49 | 0.00 | |
17 | N295501 | 1.26 | 0.33 | 0.20 | |
18 | N295601 | 0.96 | -1.24 | 0.15 | |
19 | N295701 | 1.20 | 0.77 | 0.00 | |
20 | N295801 | 1.04 | 0.32 | 0.31 | |
21 | N295901 | 1.36 | 1.38 | 0.08 | |
22 | N296001 | 1.09 | 0.66 | 0.29 | |
23 | N296101 | 1.10 | 0.99 | 0.24 | |
M23 | 1 | N310401 | 0.68 | -3.25 | 0.00 |
2 | N310501 | 0.88 | -2.17 | 0.15 | |
3 | N310601 | 1.02 | -0.82 | 0.17 | |
4 | N310701 | 0.55 | -3.82 | 0.00 | |
5 | N310702 | 0.62 | -2.18 | 0.00 | |
6 | N310703 | 0.66 | -0.27 | 0.00 | |
7 | N310801 | 0.59 | -1.50 | 0.09 | |
8 | N310802 | 1.05 | 0.31 | 0.11 | |
9 | N310803 | 0.78 | -0.92 | 0.05 | |
10 | N310901 | 0.83 | -0.57 | 0.28 | |
11 | N311001 | 0.91 | -0.95 | 0.21 | |
12 | N311101 | 1.05 | -0.94 | 0.00 | |
13 | N311201 | 0.77 | -1.12 | 0.00 | |
14 | N311301 | 0.59 | -0.91 | 0.00 | |
15 | N311401 | 1.06 | -0.68 | 0.17 | |
16 | N311501 | 0.93 | -0.71 | 0.00 | |
17 | N311502 | 1.05 | 1.15 | 0.00 | |
18 | N311601 | 1.28 | -0.14 | 0.20 | |
19 | N311701 | 0.49 | -0.37 | 0.34 | |
21 | N311801 | 0.31 | 2.72 | 0.25 | |
22 | N311901 | 0.77 | 1.47 | 0.27 | |
23 | N312001 | 1.01 | 0.84 | 0.20 | |
24 | N312101 | 1.42 | 0.45 | 0.14 | |
25 | N312201 | 0.62 | 0.58 | 0.20 | |
M24 | 1 | N312401 | 1.13 | -1.93 | 0.17 |
2 | N312501 | 1.53 | -0.66 | 0.25 | |
3 | N312601 | 0.66 | -1.39 | 0.22 | |
4 | N312701 | 1.02 | -1.83 | 0.21 | |
5 | N312702 | 0.81 | -1.75 | 0.22 | |
6 | N312801 | 0.80 | -1.22 | 0.38 | |
7 | N312901 | 1.00 | -1.15 | 0.00 | |
8 | N313001 | 0.64 | -1.38 | 0.00 | |
9 | N313101 | 0.89 | -0.98 | 0.00 | |
10 | N313102 | 0.93 | -0.01 | 0.00 | |
11 | N313103 | 0.81 | -0.17 | 0.00 | |
12 | N313201 | 0.44 | -0.83 | 0.20 | |
13 | N313301 | 1.10 | -1.98 | 0.16 | |
14 | N313302 | 0.59 | -1.56 | 0.12 | |
15 | N313303 | 1.02 | -0.23 | 0.12 | |
16 | N313401 | 0.80 | -0.77 | 0.11 | |
17 | N313501 | 0.69 | -1.26 | 0.11 | |
18 | N313502 | 1.14 | 0.31 | 0.16 | |
19 | N313503 | 1.28 | -0.55 | 0.12 | |
20 | N313601 | 1.68 | 0.69 | 0.45 | |
21 | N313701 | 0.97 | -0.84 | 0.00 | |
22 | N313702 | 1.29 | 0.52 | 0.00 | |
23 | N313801 | 0.91 | -0.52 | 0.00 | |
24 | N313901 | 0.84 | -0.59 | 0.00 | |
25 | N314001 | 1.27 | 1.03 | 0.28 | |
26 | N314101 | 0.94 | 1.55 | 0.09 | |
MX51 | 1 | N287401 | 1.03 | 0.03 | 0.17 |
2 | N287501 | 1.42 | -0.63 | 0.16 | |
3 | N287601 | 1.16 | 0.86 | 0.00 | |
4 | N287701 | 0.73 | -1.57 | 0.25 | |
5 | N287801 | 0.75 | -2.07 | 0.13 | |
6 | N287901 | 0.92 | -1.45 | 0.23 | |
7 | N288001 | 1.19 | -0.08 | 0.17 | |
8 | N288101 | 0.62 | -0.37 | 0.00 | |
9 | N288201 | 1.14 | 1.24 | 0.23 | |
10 | N288301 | 0.82 | -1.67 | 0.21 | |
11 | N288401 | 1.08 | -0.52 | 0.33 | |
12 | N288501 | 1.11 | -0.50 | 0.00 | |
13 | N288601 | 1.25 | -0.06 | 0.13 | |
14 | N288701 | 1.11 | -1.04 | 0.25 | |
15 | N288801 | 1.66 | 0.77 | 0.27 | |
16 | N288901 | 0.99 | -0.25 | 0.23 | |
17 | N289001 | 1.21 | 0.64 | 0.19 | |
18 | N289101 | 1.43 | 0.40 | 0.11 | |
19 | N289201 | 1.26 | -0.33 | 0.00 | |
20 | N289301 | 1.32 | 1.82 | 0.25 | |
21 | N289401 | 0.60 | -0.22 | 0.31 | |
MX52 | 1 | N289501 | 0.44 | -1.56 | 0.22 |
2 | N289601 | 1.01 | -0.81 | 0.41 | |
3 | N289701 | 1.03 | -0.67 | 0.00 | |
4 | N289801 | 1.08 | -1.06 | 0.26 | |
5 | N289901 | 0.58 | -2.47 | 0.00 | |
6 | N290001 | 0.74 | -0.95 | 0.25 | |
7 | N290101 | 0.84 | 0.07 | 0.00 | |
8 | N290201 | 1.27 | 0.03 | 0.15 | |
9 | N290301 | 2.31 | 1.70 | 0.15 | |
10 | N290401 | 0.60 | -0.28 | 0.16 | |
11 | N290501 | 0.53 | -1.51 | 0.25 | |
12 | N290601 | 1.23 | -0.13 | 0.45 | |
13 | N290701 | 0.30 | -3.91 | 0.00 | |
14 | N290801 | 1.31 | 0.17 | 0.12 | |
17 | N291101 | 0.80 | -0.20 | 0.28 | |
18 | N291201 | 1.53 | -0.07 | 0.17 | |
19 | N291301 | 0.99 | 1.63 | 0.35 | |
20 | N291401 | 0.73 | -0.12 | 0.23 | |
21 | N291501 | 0.48 | 1.99 | 0.00 | |
22 | N2909CL | 0.53 | 3.77 | 0.00 |