NAEP Technical Documentation Proportion of Scale Score Variance Accounted for by the Population-Structure Model, Grade 8 Mathematics State Assessment, by Subscale and State/Jurisdiction: 2015

Proportion of scale score variance accounted for by the population-structure model, grade 8 mathematics state assessment, by subscale and state/jurisdiction: 2015

State/jurisdiction	Number of principal components2	Proportion of scale score variance accounted for by the population-structure model1
		Number properties and operations	Measurement	Geometry	Data analysis, statistics, and probability	Algebra
							Alabama	246	.70	.72	.74	.73	.74
Alaska	104	.50	.54	.51	.53	.53
Arizona	335	.72	.76	.71	.75	.81
Arkansas	285	.68	.70	.70	.70	.74
California	332	.69	.72	.69	.73	.76
Colorado	295	.75	.72	.71	.73	.78
Connecticut	285	.75	.73	.74	.77	.78
Delaware	255	.74	.70	.72	.72	.75
Florida	346	.72	.72	.68	.73	.75
Georgia	288	.72	.72	.70	.71	.72
Hawaii	257	.70	.68	.69	.75	.75
Idaho	292	.72	.68	.71	.70	.74
Illinois	292	.70	.73	.72	.74	.74
Indiana	274	.76	.76	.78	.78	.77
Iowa	280	.72	.74	.68	.71	.75
Kansas	296	.75	.74	.72	.70	.76
Kentucky	289	.63	.67	.62	.64	.68
Louisiana	265	.69	.69	.74	.75	.75
Maine	288	.71	.73	.70	.72	.75
Maryland	295	.71	.71	.75	.75	.79
Massachusetts	294	.75	.74	.74	.78	.77
Michigan	274	.71	.74	.70	.73	.74
Minnesota	299	.74	.72	.73	.75	.76
Mississippi	251	.70	.77	.72	.67	.69
Missouri	271	.72	.72	.73	.71	.74
Montana	271	.71	.69	.69	.73	.74
Nebraska	286	.74	.75	.75	.71	.74
Nevada	305	.77	.73	.75	.76	.77
New Hampshire	261	.72	.70	.67	.70	.74
New Jersey	270	.78	.75	.76	.75	.80
New Mexico	339	.75	.72	.73	.74	.76
New York	301	.72	.74	.72	.73	.74
North Carolina	328	.77	.80	.75	.74	.79
North Dakota	307	.74	.64	.72	.74	.77
Ohio	267	.73	.71	.73	.73	.74
Oklahoma	343	.77	.79	.80	.76	.80
Oregon	288	.76	.72	.70	.73	.75
Pennsylvania	290	.72	.73	.74	.74	.78
Rhode Island	251	.70	.74	.73	.75	.75
South Carolina	276	.72	.76	.70	.75	.78
South Dakota	312	.69	.72	.71	.75	.77
Tennessee	255	.72	.73	.71	.72	.71
Texas	321	.72	.69	.73	.72	.78
Utah	146	.36	.39	.36	.36	.42
Vermont	250	.73	.70	.69	.77	.74
Virginia	278	.74	.73	.79	.77	.77
Washington	303	.74	.71	.71	.75	.77
West Virginia	245	.60	.63	.61	.67	.68
Wisconsin	282	.73	.74	.70	.72	.75
Wyoming	252	.68	.74	.71	.73	.72
Other jurisdictions
District of Columbia	204	.69	.75	.70	.64	.75
DoDEA	221	.73	.74	.76	.75	.80
1 (Total Variance – Residual Variance) / Total Variance, where Total Variance consists of sampling, measurement, and other sources of error. 2 Excluding the constant term. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2015 Mathematics Assessment.

Printer-friendly Version