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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, Grade 12 Mathematics State Assessment, By Scale and Jurisdiction: 2009

NAEP Technical DocumentationProportion of scale score variance accounted for by the population-structure model, grade 12 mathematics state assessment, by scale and jurisdiction: 2009
Jurisdiction Number of principal components Proportion1 of scale score variance accounted for by the population-structure model
Number properties and operations Measurement Geometry Data analysis, statistics, and probability
1 (Total Variance – Residual Variance)/Total Variance, where Total Variance consists of both sampling and measurement error variance.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Mathematics State Assessment.
Arkansas 271 0.87 0.81 0.81 0.82
Connecticut 260 0.86 0.82 0.80 0.85
Florida 272 0.73 0.72 0.72 0.77
Idaho 267 0.81 0.78 0.75 0.79
Illinois 250 0.86 0.82 0.80 0.86
Iowa 250 0.82 0.78 0.72 0.82
Massachusetts 266 0.83 0.77 0.77 0.81
New Hampshire 236 0.82 0.78 0.78 0.84
New Jersey 269 0.79 0.79 0.78 0.83
South Dakota 254 0.84 0.78 0.77 0.80
West Virginia 250 0.84 0.79 0.77 0.82
Last updated 05 January 2016 (GF)