NAEP Analysis and Scaling - Proportion of Scale Score Variance Accounted for by the Population-Structure Models, Grade 4 Reading Combined National and State Main Assessment, By Scale and Jurisdiction: 2007

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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 Model → Proportion of Scale Score Variance Accounted for by the Population-Structure Model, Grade 4 Reading Combined National and State Main Assessment, By Scale and Jurisdiction: 2007

NAEP Technical DocumentationProportion of scale score variance accounted for by the population-structure model, grade 4 reading combined national and state main assessment, by scale and jurisdiction: 2007
Jurisdiction	Number of principal components	Proportion¹ of scale score variance accounted for by the population-structure model
Jurisdiction	Number of principal components	Literary	Information
¹ (Total Variance – Residual Variance)/Total Variance, where Total Variance consists of both sampling and measurement error variance. ² Department of Defense Education Activity. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2007 Reading National and State Assessments.
Alabama	252	0.55	0.56
Alaska	227	0.55	0.57
Arizona	314	0.61	0.64
Arkansas	251	0.57	0.65
California	355	0.58	0.61
Colorado	269	0.60	0.65
Connecticut	248	0.62	0.68
Delaware	244	0.47	0.51
Florida	310	0.51	0.54
Georgia	262	0.52	0.53
Hawaii	280	0.57	0.59
Idaho	291	0.55	0.56
Illinois	282	0.55	0.58
Indiana	251	0.56	0.56
Iowa	254	0.57	0.56
Kansas	272	0.55	0.54
Kentucky	238	0.48	0.48
Louisiana	236	0.58	0.57
Maine	259	0.55	0.55
Maryland	240	0.51	0.55
Massachusetts	278	0.56	0.60
Michigan	253	0.54	0.61
Minnesota	282	0.57	0.60
Mississippi	244	0.48	0.51
Missouri	254	0.55	0.53
Montana	299	0.58	0.63
Nebraska	260	0.59	0.59
Nevada	292	0.58	0.62
New Hampshire	271	0.54	0.56
New Jersey	249	0.58	0.55
New Mexico	307	0.64	0.61
New York	286	0.58	0.62
North Carolina	325	0.58	0.59
North Dakota	271	0.49	0.50
Ohio	251	0.52	0.57
Oklahoma	309	0.63	0.63
Oregon	293	0.62	0.66
Pennsylvania	254	0.60	0.61
Rhode Island	260	0.61	0.64
South Carolina	259	0.54	0.54
South Dakota	283	0.54	0.56
Tennessee	247	0.52	0.54
Texas	319	0.50	0.52
Utah	262	0.58	0.59
Vermont	264	0.57	0.62
Virginia	264	0.54	0.51
Washington	305	0.60	0.62
West Virginia	252	0.56	0.57
Wisconsin	264	0.58	0.60
Wyoming	270	0.56	0.52
Other jurisdictions
District of Columbia	179	0.55	0.60
DoDEA²	261	0.46	0.49

Last updated 18 February 2010 (JL)

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