- Surveys & Programs
- Data & Tools
- Fast Facts
- News & Events
- Publications & Products
- About Us
Table of Contents | Search Technical Documentation | References
NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Assessment IRT Parameters → U.S. History Assessment IRT Parameters → IRT Parameters for the Economic and Technology Subscale, Grade 8 U.S. History National Assessment, by Item and Block: 2014
| Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 | dj5 |
|---|---|---|---|---|---|---|---|---|---|---|
|
† Not applicable; c parameters are not estimated for the two-parameter logistic model or generalized partial credit models, and d parameters are not estimated for two-parameter or three-parameter models. NOTE: For item j, aj represents the discriminatory power of the item, bj represents a location parameter related to item difficulty, cj represents the guessing parameter, and dji represents the category threshold parameter for category i. The c parameter is assumed to be exactly zero and is not estimated for items scaled with the two-parameter logistic model. For item j, dji may not sum to zero because of rounding. In 2014, grades 4 and 12 were not assessed SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2014 U.S. History Assessment. | ||||||||||
| H3 | 5 | H035901 | 0.40 | -0.54 | † | 0.50 | -0.50 | † | † | † |
| 6 | H035902 | 0.74 | 1.14 | † | 0.10 | -0.10 | † | † | † | |
| 10 | H036301 | 0.90 | -0.80 | .31 | † | † | † | † | † | |
| 11 | H036401 | 0.86 | 0.57 | .28 | † | † | † | † | † | |
| 12 | H036402 | 0.52 | 0.59 | † | 1.14 | 0.09 | -1.23 | † | † | |
| 15 | H036701 | 0.46 | -1.84 | .28 | † | † | † | † | † | |
| 17 | H036801 | 0.27 | 0.50 | .29 | † | † | † | † | † | |
| H4 | 8 | H059501 | 0.90 | 0.96 | .25 | † | † | † | † | † |
| 9 | H059601 | 0.73 | -0.49 | .27 | † | † | † | † | † | |
| 10 | H059701 | 0.77 | 0.86 | † | -0.14 | 0.14 | † | † | † | |
| 12 | H059901 | 1.42 | 0.19 | .38 | † | † | † | † | † | |
| H5 | 9 | H038401 | 1.69 | 1.33 | .22 | † | † | † | † | † |
| H6 | 10 | H069601 | 0.64 | 0.11 | † | 1.30 | -1.30 | † | † | † |
| H10 | 3 | H042101 | 0.28 | -1.10 | .32 | † | † | † | † | † |
| 4 | H042102 | 1.18 | 1.18 | .32 | † | † | † | † | † | |
| 11 | H042701 | 0.77 | -0.62 | .24 | † | † | † | † | † | |
| 12 | H042702 | 0.76 | -0.55 | .20 | † | † | † | † | † | |
| 16 | H043001 | 0.45 | 1.70 | † | 0.86 | -0.86 | † | † | † | |
| 17 | H043101 | 0.35 | 1.35 | † | 1.25 | -1.25 | † | † | † | |
| H11 | 1 | H070301 | 1.69 | 1.26 | .35 | † | † | † | † | † |
| 2 | H070401 | 0.69 | 0.84 | † | 0.46 | -0.46 | † | † | † | |
| 4 | H070601 | 1.38 | 0.71 | .28 | † | † | † | † | † | |
| 8 | H071001 | 0.76 | 0.99 | † | 1.95 | -1.07 | -0.88 | † | † | |
| 9 | H071101 | 0.57 | 1.63 | .20 | † | † | † | † | † | |
| 11 | H071301 | 0.73 | -0.91 | .31 | † | † | † | † | † | |
| 12 | H071401 | 0.77 | 1.39 | .32 | † | † | † | † | † | |
| 13 | H071501 | 0.59 | 4.13 | .31 | † | † | † | † | † | |
| 15 | H071701 | 1.23 | 0.75 | .39 | † | † | † | † | † | |
| H12 | 1 | H071901 | 0.76 | -0.01 | † | 0.25 | -0.25 | † | † | † |
| 2 | H072001 | 1.04 | 0.44 | .44 | † | † | † | † | † | |
| 4 | H072201 | 1.66 | 0.36 | .24 | † | † | † | † | † | |
| 5 | H072301 | 1.64 | 0.16 | .29 | † | † | † | † | † | |
| 6 | H072401 | 0.94 | 0.48 | .22 | † | † | † | † | † | |
| 8 | H072601 | 0.73 | 2.26 | † | 1.05 | -1.05 | † | † | † | |
| 9 | H072701 | 0.56 | 0.14 | † | 1.72 | -1.09 | -0.63 | † | † | |
| 10 | H072801 | 0.89 | 0.50 | .31 | † | † | † | † | † | |
| 11 | H072901 | 1.06 | 0.88 | .21 | † | † | † | † | † | |
| 13 | H073101 | 0.65 | 0.42 | † | 0.46 | -0.46 | † | † | † | |
| 15 | H073301 | 1.17 | 1.06 | .22 | † | † | † | † | † | |
Last updated 30 August 2021 (ML)
