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NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Assessment IRT Parameters → Mathematics Assessment IRT Parameters → IRT Parameters for Items in the Measurement Subscale, Grade 4 Mathematics Combined National and State Assessment, by Block and Item: 2022
NAEP Technical DocumentationIRT Parameters for Items in the Measurement Subscale, Grade 4 Mathematics Combined National and State Assessment, by Block and Item: 2022
| Item | NAEP ID | a | b | c | d | d | d | |
|---|---|---|---|---|---|---|---|---|
| Not applicable; c parameters are not estimated for the two-parameter logistic or generalized partial credit models, and d parameters are not estimated for the two-parameter or three-parameter logistic models. | ||||||||
| For item j, a represents the discriminatory power of the item, b represents a location parameter related to item difficulty, c represents the guessing parameter, and d represents the category threshold parameter for category i. The c parameter value is assumed to be exactly zero and is not estimated for items scaled with the two-parameter logistic model. For item j, d may not sum to zero because of rounding. | ||||||||
| U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2022 Mathematics Assessment. | ||||||||
| Block M1 | ||||||||
| 4 | M373401 | 0.488 | -1.648 | 0.098 | ||||
| 9 | M398901 | 0.580 | -0.023 | 0.265 | ||||
| 11 | M392901 | 0.698 | 0.282 | 0.182 | ||||
| 16 | M4013MS | 0.435 | 0.543 | -2.462 | 2.462 | |||
| Block M2 | ||||||||
| 1 | M243201 | 0.925 | -2.419 | 0.135 | ||||
| 8 | M395001 | 0.330 | -1.052 | 0.061 | ||||
| 12 | M241701 | 1.239 | 0.012 | 0.089 | ||||
| 15 | M245901 | 0.590 | -0.136 | 0.099 | ||||
| 17 | M369401 | 0.679 | 1.647 | 0.492 | -0.492 | |||
| Block M3 | ||||||||
| 1 | M3692MS | 0.922 | -1.989 | |||||
| 4 | M230001 | 0.604 | 0.138 | 0.132 | ||||
| 7 | M3711CL | 0.536 | 0.271 | 0.551 | -2.025 | 1.474 | ||
| Block M4 | ||||||||
| 2 | M344501 | 0.679 | -1.457 | 0.121 | ||||
| 11 | M343801 | 1.405 | 0.841 | 0.210 | ||||
| 17 | M338501 | 0.752 | -0.649 | 0.099 | ||||
| Block M5 | ||||||||
| 1 | M226901 | 1.633 | 0.961 | 0.361 | ||||
| 9 | M219401 | 0.791 | -1.451 | 0.103 | ||||
| Block M6 | ||||||||
| 3 | M219901 | 0.556 | 0.793 | 0.199 | ||||
| 14 | M221101 | 1.076 | 0.451 | 0.128 | -0.128 | |||
| Block M7 | ||||||||
| 2 | M156301 | 0.700 | -1.631 | 0.130 | ||||
| 7 | M158301 | 1.250 | 1.206 | 0.190 | ||||
| Block M8 | ||||||||
| 1 | M3764MS | 0.671 | -1.272 | |||||
| 9 | M3756MS | 0.557 | 1.346 | -1.348 | 1.348 | |||
| 11 | M378401 | 0.257 | 5.883 | |||||
| Block M9 | ||||||||
| 14 | M398201 | 0.759 | 1.229 | |||||
| 16 | M400601 | 0.746 | 1.335 | 0.150 | ||||
| Block M10 | ||||||||
| 4 | M339101 | 0.615 | 0.884 | 0.161 | ||||
| 10 | M339201 | 0.844 | 0.172 | 0.114 | ||||
| 15 | M218601 | 0.828 | -1.030 | 0.107 | ||||
| 19 | M219001 | 0.599 | -0.912 | 0.106 | ||||
| Block M11 | ||||||||
| 8 | M390801 | 0.710 | -0.079 | 0.276 | ||||
| 11 | M245101 | 1.353 | -0.724 | 0.127 | ||||
| 13 | M3721MS | 0.705 | 0.189 | |||||
| 15 | M402001 | 0.956 | 1.276 | 0.422 | -0.422 | |||
| Block M12 | ||||||||
| 10 | M393501 | 0.592 | -1.031 | 0.108 | ||||
| 12 | M375001 | 0.889 | -0.525 | 0.052 | ||||
| 14 | M370001 | 0.593 | 1.854 | -0.982 | 0.982 | |||
| Block M13 | ||||||||
| 6 | M377801 | 0.907 | -0.836 | 0.100 | ||||
| 10 | M3926MS | 0.611 | 0.302 | -0.536 | 0.536 | |||
| 15 | M400001 | 0.360 | 1.765 | 0.166 | ||||
| Block M14 | ||||||||
| 2 | M246201 | 0.973 | -1.334 | 0.175 | ||||
| 4 | M246901 | 0.732 | -0.967 | 0.154 | ||||
Last updated 24 July 2024 (SK)