IRT parameters for the physical science scale, by block and item, grade 8 science state assessment (accommodations permitted [R3]): 2000
Block |
Item |
NAEP ID |
aj |
bj |
cj |
dj1 |
dj2 |
dj3 |
S3 |
1 |
K040601 |
0.62 |
-0.05 |
0.00 |
† |
† |
† |
2 |
K0406CL |
0.68 |
0.93 |
0.00 |
-0.08 |
0.08 |
† |
3 |
K040603 |
0.66 |
-0.72 |
0.00 |
† |
† |
† |
4 |
K040604 |
0.66 |
0.08 |
0.00 |
† |
† |
† |
5 |
K040605 |
0.44 |
0.59 |
0.00 |
0.22 |
-0.22 |
† |
6 |
K040606 |
0.90 |
-0.22 |
0.00 |
1.77 |
-1.77 |
† |
S6 |
6 |
K031309 |
0.26 |
-2.68 |
0.00 |
-5.42 |
2.68 |
2.74 |
7 |
K031302 |
0.66 |
0.93 |
0.00 |
† |
† |
† |
8 |
K031305 |
0.83 |
1.49 |
0.00 |
† |
† |
† |
9 |
K031306 |
0.65 |
2.93 |
0.00 |
† |
† |
† |
S10 |
9 |
K095901 |
0.60 |
1.29 |
0.00 |
1.13 |
-1.13 |
† |
10 |
K093601 |
0.83 |
1.76 |
0.00 |
0.50 |
-0.50 |
† |
11 |
K095301 |
0.76 |
0.56 |
0.41 |
† |
† |
† |
14 |
K095101 |
1.01 |
0.82 |
0.29 |
† |
† |
† |
15 |
K095801 |
0.62 |
1.33 |
0.00 |
† |
† |
† |
16 |
K095501 |
1.57 |
1.44 |
0.15 |
† |
† |
† |
S11 |
4 |
K042801 |
0.98 |
1.16 |
0.16 |
† |
† |
† |
5 |
K042901 |
2.55 |
1.63 |
0.26 |
† |
† |
† |
10 |
K043201 |
0.38 |
0.16 |
0.21 |
† |
† |
† |
13 |
K043501 |
0.67 |
0.00 |
0.00 |
1.33 |
-1.33 |
† |
14 |
K043601 |
0.84 |
-0.09 |
0.00 |
† |
† |
† |
15 |
K043602 |
0.53 |
2.84 |
0.00 |
-0.59 |
0.59 |
† |
16 |
K043603 |
0.68 |
-0.89 |
0.00 |
† |
† |
† |
S12 |
1 |
K046801 |
0.53 |
0.50 |
0.23 |
† |
† |
† |
2 |
K046901 |
0.98 |
0.44 |
0.25 |
† |
† |
† |
4 |
K047101 |
1.18 |
0.21 |
0.18 |
† |
† |
† |
5 |
K047201 |
0.49 |
0.38 |
0.00 |
0.14 |
-1.24 |
1.10 |
7 |
K047401 |
0.63 |
0.87 |
0.00 |
-0.47 |
0.47 |
† |
12 |
K047901 |
1.01 |
0.33 |
0.00 |
† |
† |
† |
S13 |
1 |
K048201 |
1.27 |
0.72 |
0.19 |
† |
† |
† |
4 |
K048501 |
1.11 |
1.13 |
0.30 |
† |
† |
† |
5 |
K048601 |
0.53 |
1.03 |
0.00 |
1.14 |
-1.14 |
† |
9 |
K049001 |
0.71 |
2.96 |
0.00 |
-1.46 |
1.46 |
† |
10 |
K049101 |
0.62 |
-0.36 |
0.12 |
† |
† |
† |
S14 |
1 |
K035401 |
1.24 |
1.38 |
0.46 |
† |
† |
† |
3 |
K035601 |
0.28 |
0.78 |
0.00 |
† |
† |
† |
4 |
K035701 |
1.18 |
0.64 |
0.21 |
† |
† |
† |
5 |
K035801 |
0.59 |
-0.52 |
0.00 |
-0.30 |
0.30 |
† |
8 |
K036201 |
1.10 |
0.56 |
0.16 |
† |
† |
† |
9 |
K036301 |
0.61 |
0.40 |
0.00 |
-1.29 |
1.29 |
† |
13 |
K036601 |
0.55 |
-0.35 |
0.10 |
† |
† |
† |
16 |
K036901 |
0.82 |
-0.41 |
0.12 |
† |
† |
† |
S15 |
4 |
K037301 |
0.43 |
0.97 |
0.00 |
-2.12 |
2.12 |
† |
6 |
K037501 |
0.81 |
1.92 |
0.00 |
-0.31 |
0.31 |
† |
8 |
K037701 |
0.36 |
-2.63 |
0.00 |
-0.35 |
1.91 |
-1.56 |
9 |
K037703 |
0.49 |
0.68 |
0.00 |
0.25 |
-0.25 |
† |
11 |
K037901 |
0.96 |
1.79 |
0.17 |
† |
† |
† |
16 |
K038301 |
0.91 |
1.32 |
0.00 |
2.02 |
0.87 |
-0.79 |
S20 |
2 |
K094001 |
0.35 |
1.55 |
0.24 |
† |
† |
† |
4 |
K096001 |
0.67 |
0.41 |
0.28 |
† |
† |
† |
6 |
K095601 |
1.26 |
0.08 |
0.24 |
† |
† |
† |
7 |
K095401 |
0.56 |
2.71 |
0.00 |
0.94 |
-0.94 |
† |
11 |
K096201 |
0.99 |
1.34 |
0.25 |
† |
† |
† |
14 |
K095201 |
0.76 |
0.78 |
0.23 |
† |
† |
† |
15 |
K093701 |
0.61 |
1.11 |
0.00 |
0.57 |
-0.57 |
† |
16 |
K097001 |
0.28 |
3.11 |
0.00 |
0.67 |
-0.67 |
† |
S21 |
3 |
K045401 |
1.35 |
0.50 |
0.57 |
† |
† |
† |
4 |
K045501 |
0.67 |
0.80 |
0.27 |
† |
† |
† |
7 |
K045801 |
0.62 |
1.17 |
0.00 |
1.54 |
-1.54 |
† |
8 |
K045901 |
1.37 |
1.21 |
0.43 |
† |
† |
† |
11 |
K046201 |
0.85 |
1.83 |
0.34 |
† |
† |
† |
14 |
K046501 |
0.72 |
1.18 |
0.00 |
0.68 |
-0.68 |
† |
15 |
K046601 |
0.82 |
0.20 |
0.00 |
† |
† |
† |
Last updated 15 July 2008 (KL)
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