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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 Science State Assessment (Accommodations Permitted [R3]): By Jurisdiction, 2000

NAEP Technical DocumentationProportion of scale score variance accounted for by the population-structure models, grade 4 science state assessment (accommodations permitted [R3]): By jurisdiction, 2000

Jurisdiction	Number of principal components2	Proportion1 of scale score variance
		Physical science	Earth science	Life science
Alabama	178	0.66	0.66	0.64
Arizona	181	0.73	0.71	0.69
Arkansas	175	0.67	0.67	0.61
California	170	0.77	0.74	0.74
Connecticut	185	0.71	0.68	0.68
Georgia	190	0.69	0.66	0.65
Hawaii	197	0.72	0.68	0.69
Idaho	166	0.75	0.71	0.67
Illinois	161	0.74	0.71	0.73
Indiana	163	0.63	0.68	0.67
Iowa	159	0.55	0.54	0.61
Kentucky	177	0.62	0.58	0.57
Louisiana	187	0.69	0.68	0.64
Maine	181	0.66	0.63	0.54
Maryland	181	0.65	0.70	0.66
Massachusetts	184	0.70	0.70	0.61
Michigan	158	0.69	0.71	0.67
Minnesota	173	0.66	0.72	0.68
Mississippi	181	0.70	0.66	0.59
Missouri	181	0.62	0.62	0.55
Montana	140	0.72	0.74	0.70
Nebraska	146	0.73	0.65	0.63
Nevada	196	0.68	0.69	0.61
New Mexico	188	0.65	0.72	0.67
New York	165	0.70	0.70	0.68
North Carolina	193	0.66	0.65	0.65
North Dakota	178	0.65	0.59	0.60
Ohio	163	0.63	0.64	0.66
Oklahoma	193	0.61	0.66	0.65
Oregon	171	0.77	0.67	0.70
Rhode Island	192	0.72	0.67	0.69
South Carolina	186	0.68	0.69	0.66
Tennessee	176	0.70	0.71	0.65
Texas	184	0.75	0.74	0.71
Utah	187	0.59	0.61	0.66
Vermont	150	0.57	0.69	0.65
Virginia	190	0.66	0.66	0.66
West Virginia	191	0.56	0.59	0.53
Wyoming	167	0.68	0.60	0.54
Other jurisdictions
American Samoa	95	0.68	0.60	0.54
DDESS3	137	0.65	0.67	0.67
DoDDS4	174	0.54	0.59	0.52
Guam	129	0.69	0.72	0.73
Virgin Islands	100	0.73	0.68	0.72
1 Proportion is (Total Variance - Residual Variance)/Total Variance. 2 Excluding the constant term. 3 Department of Defense Domestic Dependent Elementary and Secondary Schools. 4 Department of Defense Dependents Schools (Overseas).
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2000 Science Assessment.

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