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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 Models, Grade 4 Reading Combined National and State Assessment, by Jurisdiction: 2003
NAEP Technical DocumentationProportion of scale score variance accounted for by the population-structure models, by jurisdiction, grade 4 reading combined national and state assessment: 2003
Jurisdiction Number of principal components Proportion1 of scale score variance
Reading for literary experience Reading to gain information
Alabama 257 0.58 0.59
Alaska 138 0.54 0.52
Arizona 284 0.57 0.59
Arkansas 268 0.59 0.58
California 315 0.52 0.59
Colorado 273 0.56 0.58
Connecticut 266 0.61 0.62
Delaware 257 0.49 0.54
Florida 278 0.54 0.58
Georgia 290 0.53 0.56
Hawaii 314 0.55 0.62
Idaho 261 0.57 0.54
Illinois 290 0.58 0.60
Indiana 256 0.48 0.54
Iowa 257 0.53 0.56
Kansas 267 0.56 0.57
Kentucky 246 0.44 0.45
Louisiana 253 0.59 0.62
Maine 254 0.54 0.51
Maryland 270 0.58 0.58
Massachusetts 289 0.57 0.59
Michigan 269 0.57 0.57
Minnesota 262 0.63 0.64
Mississippi 246 0.49 0.54
Missouri 264 0.52 0.51
Montana 258 0.59 0.58
Nebraska 263 0.54 0.54
Nevada 276 0.55 0.61
New Hampshire 267 0.54 0.55
New Jersey 262 0.54 0.56
New Mexico 284 0.60 0.58
New York 277 0.54 0.55
North Carolina 284 0.55 0.55
North Dakota 260 0.55 0.54
Ohio 266 0.53 0.57
Oklahoma 275 0.58 0.59
Oregon 278 0.51 0.53
Pennsylvania 260 0.58 0.62
Rhode Island 268 0.58 0.58
South Carolina 255 0.49 0.50
South Dakota 258 0.52 0.53
Tennessee 266 0.57 0.55
Texas 274 0.45 0.51
Utah 263 0.57 0.56
Vermont 249 0.49 0.49
Virginia 275 0.55 0.60
Washington 287 0.55 0.55
West Virginia 236 0.44 0.52
Wisconsin 266 0.57 0.57
Wyoming 261 0.55 0.57
Other jurisdictions
District of Columbia 242 0.54 0.59
DDESS2 205 0.59 0.58
DoDDS3 236 0.52 0.53
Virgin Islands 134 0.49 0.49
1 (Total Variance – Residual Variance)/Total Variance, where Total Variance consists of both sampling and measurement error variance.
2 Department of Defense Domestic Dependent Elementary and Secondary Schools.
3 Department of Defense Dependents Schools (Overseas).
NOTE: The NAEP reading assessment does not assess the "reading to perform a task" scale at grade 4.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2003 Reading Assessment.
Last updated 13 February 2009 (GF)

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