IRT parameters for the life science scale, by block and item, grade 4 national main science assessment (accommodations not permitted [R2]): 2000
Block |
Item |
NAEP ID |
aj |
bj |
cj |
dj1 |
dj2 |
dj3 |
dj4 |
S3 |
2 |
K0310CL |
0.15 |
0.87 |
0.00 |
-14.56 |
9.77 |
-0.99 |
5.78 |
3 |
K031003 |
0.55 |
2.54 |
0.00 |
1.89 |
-1.89 |
† |
† |
4 |
K031004 |
0.57 |
-0.34 |
0.00 |
† |
† |
† |
† |
5 |
K031005 |
0.45 |
1.71 |
0.00 |
0.93 |
-0.93 |
† |
† |
6 |
K031006 |
0.62 |
-0.03 |
0.00 |
0.29 |
-0.29 |
† |
† |
7 |
K031007 |
0.43 |
0.75 |
0.00 |
-0.08 |
0.08 |
† |
† |
S8 |
1 |
K104201 |
0.53 |
-2.28 |
0.22 |
† |
† |
† |
† |
2 |
K103301 |
0.80 |
2.48 |
0.21 |
† |
† |
† |
† |
3 |
K103401 |
1.22 |
-0.10 |
0.20 |
† |
† |
† |
† |
4 |
K103601 |
1.39 |
-0.20 |
0.19 |
† |
† |
† |
† |
5 |
K103701 |
0.81 |
0.27 |
0.16 |
† |
† |
† |
† |
6 |
K104001 |
1.28 |
-0.76 |
0.30 |
† |
† |
† |
† |
8 |
K104301 |
0.86 |
0.53 |
0.30 |
† |
† |
† |
† |
9 |
K103801 |
0.92 |
0.68 |
0.28 |
† |
† |
† |
† |
10 |
K103901 |
0.29 |
2.21 |
0.00 |
† |
† |
† |
† |
11 |
K104101 |
1.13 |
0.79 |
0.23 |
† |
† |
† |
† |
12 |
K103001 |
0.94 |
1.11 |
0.15 |
† |
† |
† |
† |
13 |
K103101 |
0.66 |
3.26 |
0.00 |
† |
† |
† |
† |
14 |
K103201 |
0.21 |
4.18 |
0.28 |
† |
† |
† |
† |
15 |
K102801 |
1.12 |
1.06 |
0.25 |
† |
† |
† |
† |
16 |
K102901 |
0.77 |
0.84 |
0.20 |
† |
† |
† |
† |
S9 |
1 |
K031601 |
0.87 |
-0.08 |
0.28 |
† |
† |
† |
† |
2 |
K031602 |
0.52 |
0.88 |
0.00 |
0.17 |
-0.17 |
† |
† |
3 |
K031603 |
0.44 |
-1.43 |
0.00 |
0.02 |
-0.02 |
† |
† |
4 |
K031604 |
0.38 |
3.33 |
0.00 |
1.60 |
-1.60 |
† |
† |
6 |
K031606 |
0.37 |
2.84 |
0.00 |
1.93 |
-1.93 |
† |
† |
7 |
K031607 |
0.94 |
0.06 |
0.00 |
† |
† |
† |
† |
8 |
K031608 |
0.52 |
3.19 |
0.00 |
2.42 |
-2.42 |
† |
† |
9 |
K031609 |
0.64 |
2.01 |
0.00 |
-0.22 |
0.22 |
† |
† |
S10 |
1 |
K031701 |
0.59 |
-0.30 |
0.25 |
† |
† |
† |
† |
9 |
K0325CL |
0.40 |
-0.43 |
0.00 |
-0.44 |
-1.32 |
1.76 |
† |
10 |
K032601 |
0.77 |
1.28 |
0.00 |
0.87 |
-0.87 |
† |
† |
11 |
K032602 |
0.75 |
1.41 |
0.00 |
† |
† |
† |
† |
S11 |
1 |
K099201 |
0.40 |
-2.32 |
0.26 |
† |
† |
† |
† |
5 |
K098001 |
0.79 |
-1.19 |
0.28 |
† |
† |
† |
† |
11 |
K092201 |
0.82 |
1.04 |
0.00 |
0.40 |
-0.40 |
† |
† |
S12 |
4 |
K033901 |
0.73 |
0.49 |
0.26 |
† |
† |
† |
† |
S13 |
1 |
K034601 |
0.24 |
0.18 |
0.24 |
† |
† |
† |
† |
2 |
K034701 |
1.17 |
1.80 |
0.35 |
† |
† |
† |
† |
S14 |
2 |
K035501 |
0.38 |
-1.00 |
0.25 |
† |
† |
† |
† |
6 |
K035901 |
0.54 |
2.36 |
0.00 |
† |
† |
† |
† |
S15 |
1 |
K037001 |
0.88 |
1.15 |
0.16 |
† |
† |
† |
† |
2 |
K037101 |
0.48 |
-0.95 |
0.23 |
† |
† |
† |
† |
3 |
K037201 |
1.17 |
0.86 |
0.29 |
† |
† |
† |
† |
S20 |
1 |
K099101 |
0.42 |
-1.56 |
0.24 |
† |
† |
† |
† |
4 |
K090101 |
0.41 |
-1.93 |
0.24 |
† |
† |
† |
† |
7 |
K098101 |
0.59 |
0.55 |
0.20 |
† |
† |
† |
† |
S21 |
5 |
K039901 |
0.43 |
-1.09 |
0.00 |
3.33 |
-1.00 |
-1.62 |
-0.72 |
8 |
K040201 |
0.99 |
1.86 |
0.13 |
† |
† |
† |
† |
Last updated 15 July 2008 (DR)
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