IRT parameters for the measurement scale, by block and item, grade 8 mathematics national main assessment (accommodations not permitted [R2]): 2000
Block |
Item |
NAEP ID |
aj |
bj |
cj |
dj1 |
dj2 |
dj3 |
dj4 |
M3 |
3 |
M093201 |
0.75 |
1.53 |
0.27 |
† |
† |
† |
† |
7 |
M093601 |
0.80 |
1.54 |
0.00 |
1.30 |
-1.30 |
† |
† |
M4 |
2 |
M017501 |
0.33 |
-3.13 |
0.19 |
† |
† |
† |
† |
8 |
M018101 |
0.54 |
-0.48 |
0.16 |
† |
† |
† |
† |
18 |
M019101 |
1.61 |
1.53 |
0.17 |
† |
† |
† |
† |
19 |
M019201 |
1.20 |
1.56 |
0.14 |
† |
† |
† |
† |
M6 |
7 |
M020301 |
0.90 |
-0.43 |
0.00 |
† |
† |
† |
† |
M7 |
9 |
M068008 |
0.41 |
2.12 |
0.00 |
0.34 |
-0.34 |
† |
† |
M8 |
2 |
M012331 |
0.61 |
-1.73 |
0.24 |
† |
† |
† |
† |
14 |
M013331 |
0.98 |
-1.27 |
0.21 |
† |
† |
† |
† |
M9 |
1 |
M052301 |
1.79 |
0.61 |
0.22 |
† |
† |
† |
† |
M10 |
1 |
M085501 |
1.34 |
0.78 |
0.17 |
† |
† |
† |
† |
2 |
M085601 |
0.92 |
-0.06 |
0.20 |
† |
† |
† |
† |
M11 |
12 |
M047101 |
1.04 |
0.22 |
0.16 |
† |
† |
† |
† |
13 |
M047201 |
0.76 |
-0.99 |
0.17 |
† |
† |
† |
† |
18 |
M047901 |
1.27 |
1.47 |
0.00 |
† |
† |
† |
† |
M13 |
2 |
M051301 |
0.38 |
-2.80 |
0.00 |
† |
† |
† |
† |
11 |
M052201 |
0.84 |
0.86 |
0.00 |
0.73 |
-0.32 |
-0.41 |
† |
M14 |
1 |
M072801 |
0.49 |
0.16 |
0.24 |
† |
† |
† |
† |
6 |
M073301 |
1.23 |
1.26 |
0.24 |
† |
† |
† |
† |
M15 |
1 |
M075201 |
0.58 |
-0.48 |
0.23 |
† |
† |
† |
† |
3 |
M075401 |
0.56 |
0.21 |
0.00 |
0.98 |
-0.98 |
† |
† |
5 |
M075601 |
0.55 |
0.22 |
0.00 |
-0.89 |
0.89 |
† |
† |
9 |
M076001 |
0.46 |
1.45 |
0.00 |
-1.90 |
0.96 |
0.95 |
† |
Last updated 14 July 2008 (KL)
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