NAEP Analysis and Scaling - Proportion of Scale Score Variance Accounted for by the Population-Structure Models, Grade 8 Mathematics 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 8 Mathematics 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 8 mathematics 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	Number, properties, and operations	Measurement	Geometry	Data analysis and probability	Algebra
Alabama	239	0.65	0.67	0.66	0.64	0.65
Alaska	100	0.34	0.31	0.29	0.34	0.32
Arizona	280	0.59	0.63	0.59	0.69	0.65
Arkansas	268	0.66	0.71	0.67	0.70	0.67
California	411	0.60	0.59	0.57	0.59	0.61
Colorado	266	0.69	0.65	0.65	0.67	0.70
Connecticut	255	0.68	0.70	0.66	0.71	0.70
Delaware	196	0.59	0.61	0.58	0.61	0.61
Florida	329	0.61	0.61	0.60	0.68	0.63
Georgia	292	0.63	0.64	0.60	0.64	0.66
Hawaii	231	0.64	0.64	0.61	0.63	0.65
Idaho	263	0.61	0.60	0.59	0.64	0.64
Illinois	288	0.68	0.70	0.66	0.67	0.70
Indiana	259	0.63	0.64	0.61	0.63	0.63
Iowa	251	0.66	0.66	0.61	0.65	0.68
Kansas	261	0.62	0.65	0.61	0.62	0.65
Kentucky	268	0.56	0.59	0.56	0.59	0.63
Louisiana	245	0.63	0.64	0.64	0.65	0.63
Maine	246	0.64	0.63	0.60	0.61	0.66
Maryland	270	0.67	0.68	0.66	0.68	0.69
Massachusetts	283	0.63	0.63	0.65	0.64	0.68
Michigan	252	0.66	0.69	0.65	0.67	0.66
Minnesota	265	0.66	0.63	0.64	0.65	0.67
Mississippi	250	0.59	0.64	0.65	0.69	0.64
Missouri	257	0.63	0.63	0.61	0.65	0.66
Montana	250	0.63	0.60	0.60	0.60	0.62
Nebraska	254	0.66	0.67	0.66	0.64	0.69
Nevada	256	0.62	0.61	0.59	0.60	0.59
New Hampshire	229	0.63	0.63	0.61	0.66	0.62
New Jersey	271	0.69	0.70	0.68	0.70	0.71
New Mexico	273	0.66	0.65	0.64	0.67	0.68
New York	327	0.61	0.62	0.60	0.62	0.62
North Carolina	296	0.63	0.62	0.59	0.62	0.64
North Dakota	230	0.57	0.55	0.57	0.64	0.55
Ohio	259	0.62	0.66	0.61	0.64	0.64
Oklahoma	283	0.65	0.64	0.64	0.67	0.65
Oregon	277	0.62	0.58	0.61	0.62	0.66
Pennsylvania	266	0.69	0.69	0.65	0.70	0.69
Rhode Island	220	0.66	0.63	0.58	0.67	0.67
South Carolina	270	0.65	0.68	0.64	0.71	0.63
South Dakota	248	0.60	0.56	0.56	0.62	0.63
Tennessee	240	0.67	0.65	0.61	0.65	0.65
Texas	358	0.59	0.58	0.55	0.63	0.63
Utah	280	0.62	0.64	0.65	0.65	0.68
Vermont	225	0.63	0.55	0.56	0.59	0.63
Virginia	279	0.66	0.71	0.69	0.67	0.68
Washington	284	0.68	0.62	0.64	0.63	0.65
West Virginia	242	0.63	0.63	0.67	0.62	0.64
Wisconsin	256	0.63	0.64	0.66	0.66	0.65
Wyoming	215	0.64	0.60	0.60	0.63	0.67
Other jurisdictions
District of Columbia	185	0.62	0.65	0.62	0.65	0.64
DoDEA³	213	0.65	0.64	0.68	0.68	0.66
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. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Mathematics Assessment.

Last updated 14 May 2009 (RF)

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