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 Conditioning Models, Grade 4 Reading State Operational Assessment: By Jurisdiction, 2011

NAEP Technical DocumentationProportion of scale score variance accounted for by the population-structure model, grade 4 reading state assessment, by scale and jurisdiction: 2011

Jurisdiction	Number of principal components	Proportion1 of scale score variance accounted for by the population-structure model
		Literary	Information
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), 2011 Reading State Assessment.
Alabama	244	0.61	0.63
Alaska	223	0.67	0.64
Arizona	339	0.69	0.70
Arkansas	275	0.61	0.63
California	325	0.69	0.69
Colorado	296	0.72	0.73
Connecticut	277	0.69	0.71
Delaware	262	0.60	0.63
Florida	352	0.62	0.58
Georgia	289	0.58	0.57
Hawaii	275	0.67	0.65
Idaho	287	0.63	0.63
Illinois	324	0.67	0.66
Indiana	280	0.60	0.63
Iowa	284	0.63	0.67
Kansas	285	0.65	0.66
Kentucky	271	0.46	0.49
Louisiana	282	0.64	0.62
Maine	297	0.61	0.57
Maryland	267	0.56	0.60
Massachusetts	315	0.59	0.60
Michigan	270	0.61	0.62
Minnesota	321	0.69	0.69
Mississippi	240	0.60	0.59
Missouri	288	0.62	0.61
Montana	312	0.62	0.66
Nebraska	277	0.64	0.64
Nevada	329	0.64	0.67
New Hampshire	274	0.55	0.59
New Jersey	272	0.57	0.62
New Mexico	356	0.61	0.67
New York	331	0.60	0.63
North Carolina	332	0.66	0.67
North Dakota	290	0.54	0.56
Ohio	261	0.59	0.59
Oklahoma	327	0.71	0.71
Oregon	309	0.66	0.68
Pennsylvania	302	0.66	0.66
Rhode Island	259	0.70	0.68
South Carolina	279	0.65	0.63
South Dakota	309	0.70	0.64
Tennessee	263	0.58	0.62
Texas	325	0.60	0.61
Utah	286	0.63	0.62
Vermont	271	0.68	0.65
Virginia	294	0.68	0.67
Washington	307	0.70	0.67
West Virginia	252	0.58	0.57
Wisconsin	315	0.62	0.63
Wyoming	293	0.63	0.62
Other jurisdictions
District of Columbia	187	0.68	0.71
DoDEA	264	0.55	0.52

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