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Table of Contents | Search Technical Documentation | References
NAEP Analysis and Scaling → Estimation of Population and Student Group Distributions → Examining the Population-Structure Models Used in NAEP → Proportion of Scale Score Variance Accounted for by the Population-Structure Models → Proportion of Scale Score Variance Accounted for by the Population-Structure Model, Mathematics Combined National and State Assessments, by Subscale and Grade: 2017
NAEP Technical Documentation Proportion of Scale Score Variance Accounted for by the Population-Structure Model, Mathematics Combined National and State Assessments, by Subscale and Grade: 2017
| Grade |
Number of initial conditioning contrasts 2 |
Number of principal components 2 | Proportion of scale score variance 1 | ||||
|---|---|---|---|---|---|---|---|
| Number properties and operations | Measurement | Geometry | Data analysis, statistics, and probability | Algebra | |||
| 4 | 3218 | 915 | .63 | .65 | .62 | .65 | .62 |
| 8 | 3560 | 947 | .65 | .65 | .64 | .66 | .67 |
|
1 (Total Variance – Residual Variance) / Total Variance, where Total Variance consists of sampling, measurement, and other sources of error. 2 Excluding the constant term. NOTE: In 2017, grade 12 was not assessed. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2017 Mathematics Assessments. | |||||||
Last updated 03 August 2022 (ML)