NAEP Analysis and Scaling- Proportion of Scale Score Variance Accounted for by the Population-Structure Models, by Jurisdiction, Grade 4 Reading Combined National and State Assessment: 2002

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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: 2002

NAEP Technical DocumentationProportion of scale score variance accounted for by the population-structure models, by jurisdiction, grade 4 reading combined national and state assessment: 2002
Jurisdiction	Number of principal components	Proportion¹ of scale score variance
Jurisdiction	Number of principal components	Reading for literary experience	Reading to gain information
Alabama	242	0.57	0.55
Arizona	244	0.58	0.59
Arkansas	225	0.58	0.58
California	228	0.63	0.63
Connecticut	238	0.56	0.56
Delaware	241	0.50	0.53
Florida	255	0.53	0.54
Georgia	255	0.49	0.52
Hawaii	256	0.56	0.59
Idaho	213	0.57	0.58
Indiana	210	0.43	0.48
Iowa	186	0.52	0.55
Kansas	188	0.56	0.53
Kentucky	223	0.40	0.45
Louisiana	218	0.57	0.56
Maine	207	0.60	0.57
Maryland	222	0.54	0.56
Massachusetts	249	0.58	0.57
Michigan	214	0.53	0.52
Minnesota	201	0.53	0.53
Mississippi	234	0.52	0.52
Missouri	240	0.57	0.57
Montana	158	0.67	0.62
Nebraska	175	0.58	0.59
Nevada	249	0.49	0.51
New Mexico	235	0.57	0.60
New York	215	0.60	0.64
North Carolina	242	0.52	0.51
North Dakota	203	0.53	0.54
Ohio	216	0.48	0.51
Oklahoma	247	0.54	0.56
Oregon	212	0.51	0.49
Pennsylvania	238	0.57	0.60
Rhode Island	232	0.55	0.55
South Carolina	241	0.51	0.61
Tennessee	226	0.48	0.52
Texas	254	0.55	0.57
Utah	237	0.53	0.52
Vermont	182	0.54	0.59
Virginia	244	0.53	0.56
Washington	205	0.52	0.53
West Virginia	218	0.50	0.50
Wyoming	222	0.56	0.55
Other jurisdictions
District of Columbia	208	0.50	0.56
DDESS²	155	0.50	0.49
DoDDS³	198	0.48	0.47
Guam	152	0.52	0.54
Virgin Islands	123	0.63	0.64
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), 2002 Reading Assessment.

Last updated 13 February 2009 (GF)

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