IRT parameters for the life science scale, by block and item, grade 8 science national main assessment (accommodations permitted [R3]): 2000
Block |
Item |
NAEP ID |
aj |
bj |
cj |
dj1 |
dj2 |
dj3 |
S6 |
10 |
K031307 |
1.06 |
1.63 |
0.00 |
0.76 |
-0.76 |
† |
11 |
K031308 |
0.55 |
2.66 |
0.00 |
† |
† |
† |
S8 |
1 |
K041301 |
0.78 |
-2.42 |
0.23 |
† |
† |
† |
2 |
K041302 |
0.92 |
-1.46 |
0.28 |
† |
† |
† |
3 |
K041303 |
0.73 |
-1.08 |
0.23 |
† |
† |
† |
4 |
K041304 |
0.58 |
0.02 |
0.12 |
† |
† |
† |
5 |
K041305 |
1.36 |
-0.71 |
0.21 |
† |
† |
† |
6 |
K041306 |
0.63 |
-0.74 |
0.00 |
† |
† |
† |
7 |
K041307 |
0.40 |
1.78 |
0.00 |
-0.34 |
0.34 |
† |
8 |
K041401 |
0.79 |
0.71 |
0.00 |
1.08 |
-1.08 |
† |
9 |
K041402 |
1.03 |
1.59 |
0.00 |
1.20 |
-1.20 |
† |
10 |
K041403 |
0.35 |
2.79 |
0.00 |
1.37 |
-1.37 |
† |
S9 |
1 |
K031601 |
0.88 |
-1.71 |
0.23 |
† |
† |
† |
2 |
K031602 |
0.39 |
-0.47 |
0.00 |
0.58 |
-0.58 |
† |
3 |
K031603 |
0.69 |
-1.51 |
0.00 |
† |
† |
† |
4 |
K031604 |
0.50 |
0.72 |
0.00 |
† |
† |
† |
5 |
K031605 |
0.58 |
-0.46 |
0.39 |
† |
† |
† |
6 |
K031606 |
0.45 |
1.05 |
0.00 |
1.39 |
-1.39 |
† |
7 |
K031610 |
0.63 |
0.21 |
0.00 |
1.44 |
-1.44 |
† |
8 |
K031607 |
0.50 |
-0.70 |
0.00 |
0.32 |
0.86 |
-1.17 |
9 |
K031608 |
0.53 |
1.71 |
0.00 |
1.98 |
-1.98 |
† |
10 |
K031609 |
0.51 |
0.51 |
0.00 |
† |
† |
† |
11 |
K031611 |
0.29 |
2.89 |
0.00 |
† |
† |
† |
12 |
K031612 |
0.93 |
-0.14 |
0.36 |
† |
† |
† |
13 |
K031613 |
0.64 |
2.34 |
0.00 |
-0.93 |
0.93 |
† |
S10 |
1 |
K092301 |
0.87 |
-1.28 |
0.24 |
† |
† |
† |
2 |
K098801 |
1.16 |
-0.03 |
0.21 |
† |
† |
† |
8 |
K090601 |
1.01 |
0.24 |
0.18 |
† |
† |
† |
17 |
K092901 |
0.59 |
1.27 |
0.18 |
† |
† |
† |
18 |
K096101 |
0.79 |
1.30 |
0.00 |
1.10 |
-1.10 |
† |
19 |
K090701 |
0.28 |
0.98 |
0.28 |
† |
† |
† |
20 |
K098901 |
0.48 |
0.15 |
0.19 |
† |
† |
† |
5 |
K099001 |
0.48 |
-0.33 |
0.00 |
1.68 |
-1.68 |
† |
S11 |
6 |
K043001 |
0.27 |
3.52 |
0.00 |
0.92 |
-0.92 |
† |
12 |
K043401 |
0.30 |
-0.39 |
0.24 |
† |
† |
† |
S12 |
8 |
K047501 |
0.90 |
2.41 |
0.35 |
† |
† |
† |
10 |
K047701 |
0.81 |
2.80 |
0.15 |
† |
† |
† |
11 |
K047801 |
1.04 |
1.11 |
0.17 |
† |
† |
† |
13 |
K048001 |
0.85 |
0.96 |
0.00 |
1.82 |
-1.82 |
† |
14 |
K048101 |
0.50 |
1.55 |
0.00 |
0.46 |
-1.22 |
0.76 |
15 |
K048102 |
0.69 |
4.25 |
0.00 |
1.61 |
-1.61 |
† |
16 |
K048103 |
0.49 |
0.88 |
0.00 |
† |
† |
† |
S13 |
3 |
K048401 |
0.63 |
0.72 |
0.23 |
† |
† |
† |
8 |
K048901 |
0.49 |
0.39 |
0.00 |
0.39 |
-0.39 |
† |
11 |
K049201 |
0.22 |
0.50 |
0.24 |
† |
† |
† |
12 |
K049301 |
0.31 |
4.41 |
0.00 |
† |
† |
† |
S14 |
2 |
K035501 |
0.52 |
-1.86 |
0.24 |
† |
† |
† |
6 |
K035901 |
0.57 |
1.03 |
0.00 |
† |
† |
† |
12 |
K036501 |
1.20 |
0.98 |
0.36 |
† |
† |
† |
14 |
K036701 |
0.40 |
2.86 |
0.00 |
-0.59 |
0.59 |
† |
15 |
K036801 |
0.51 |
1.40 |
0.00 |
-0.50 |
0.50 |
† |
S15 |
2 |
K037101 |
0.26 |
-2.76 |
0.24 |
† |
† |
† |
3 |
K037201 |
0.67 |
-1.15 |
0.23 |
† |
† |
† |
12 |
K038001 |
0.76 |
1.80 |
0.23 |
† |
† |
† |
13 |
K038002 |
1.22 |
1.24 |
0.16 |
† |
† |
† |
14 |
K038101 |
0.65 |
2.45 |
0.00 |
† |
† |
† |
S10 |
1 |
K093001 |
0.73 |
-1.36 |
0.24 |
† |
† |
† |
12 |
K090201 |
0.76 |
-0.29 |
0.23 |
† |
† |
† |
13 |
K092801 |
0.53 |
3.62 |
0.00 |
† |
† |
† |
17 |
K091601 |
0.64 |
1.72 |
0.17 |
† |
† |
† |
18 |
K094901 |
0.47 |
3.52 |
0.00 |
1.69 |
-1.69 |
† |
19 |
K095001 |
0.60 |
0.42 |
0.19 |
† |
† |
† |
20 |
K091201 |
1.42 |
1.00 |
0.21 |
† |
† |
† |
S21 |
1 |
K045201 |
0.61 |
-1.72 |
0.25 |
† |
† |
† |
2 |
K045301 |
0.34 |
3.20 |
0.00 |
† |
† |
† |
5 |
K045601 |
0.59 |
1.67 |
0.00 |
0.98 |
-0.98 |
† |
9 |
K046001 |
0.40 |
0.38 |
0.15 |
† |
† |
† |
12 |
K046301 |
0.30 |
2.03 |
0.00 |
3.45 |
-3.45 |
† |
13 |
K046401 |
0.63 |
1.92 |
0.00 |
† |
† |
† |
16 |
K046701 |
0.55 |
1.14 |
0.00 |
2.15 |
-1.46 |
-0.69 |
Last updated 15 July 2008 (DR)
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