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 Subscale and Jurisdiction: 2005

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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 Main Assessment, by Subscale and Jurisdiction: 2005

NAEP Technical DocumentationProportion of scale score variance accounted for by the population-structure models, grade 4 reading combined national and state main assessment, by subscale and jurisdiction: 2005
Jurisdiction	Number of principal components²	Proportion¹ of scale score variance accounted for by the population-structure model
Jurisdiction	Number of principal components²	Literary	Information
Alabama	257	0.57	0.58
Alaska	158	0.57	0.47
Arizona	268	0.59	0.62
Arkansas	264	0.53	0.57
California	397	0.51	0.51
Colorado	268	0.58	0.54
Connecticut	272	0.58	0.61
Delaware	228	0.50	0.55
Florida	323	0.50	0.54
Georgia	287	0.54	0.53
Hawaii	268	0.56	0.59
Idaho	266	0.52	0.53
Illinois	296	0.58	0.60
Indiana	257	0.52	0.53
Iowa	245	0.54	0.56
Kansas	254	0.51	0.50
Kentucky	253	0.46	0.50
Louisiana	250	0.53	0.61
Maine	271	0.49	0.47
Maryland	249	0.52	0.61
Massachusetts	297	0.56	0.56
Michigan	235	0.52	0.53
Minnesota	261	0.57	0.56
Mississippi	265	0.50	0.52
Missouri	264	0.50	0.49
Montana	279	0.48	0.56
Nebraska	246	0.54	0.52
Nevada	275	0.51	0.56
New Hampshire	276	0.56	0.55
New Jersey	271	0.53	0.59
New Mexico	289	0.53	0.57
New York	319	0.51	0.52
North Carolina	302	0.54	0.56
North Dakota	248	0.46	0.54
Ohio	268	0.49	0.56
Oklahoma	280	0.52	0.56
Oregon	266	0.55	0.62
Pennsylvania	254	0.55	0.55
Rhode Island	266	0.59	0.61
South Carolina	252	0.50	0.56
South Dakota	272	0.57	0.59
Tennessee	266	0.57	0.55
Texas	356	0.45	0.47
Utah	251	0.57	0.53
Vermont	249	0.60	0.57
Virginia	257	0.56	0.55
Washington	269	0.55	0.55
West Virginia	257	0.48	0.47
Wisconsin	259	0.54	0.57
Wyoming	225	0.59	0.59
Other jurisdictions
District of Columbia	185	0.56	0.56
DoDEA³	250	0.51	0.54
¹ (Total Variance – Residual Variance)/Total Variance, where Total Variance consists of both sampling and measurement error variance. ²Excluding the constant term. ³ Department of Defense Education Activity. NOTE: The category "Task" was not included for grade 4 in 2005. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Reading Assessment.

Last updated 14 May 2009 (RF)

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