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NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Scales → Correlations Among NAEP Subject Area Subscales → Average Marginal Correlations and Ranges of Correlations Among the Mathematics Scales for 52 Jurisdictions, Grade 8 Mathematics Combined National and State Main Assessment: 2005

NAEP Technical DocumentationAverage marginal correlations and ranges of correlations among the mathematics scales for 52 jurisdictions for grade 8, mathematics combined national and state main assessment: 2005

Scale	Number sense, properties, and operations		Measurement		Geometry and spatial sense		Data analysis, statistics, and probability		Algebra and functions
	Average correlation	Range of correlations	Average correlation	Range of correlations	Average correlation	Range of correlations	Average correlation	Range of correlations	Average correlation	Range of correlations
Number sense, properties, and operations	§	§	§	§	§	§	§	§	§	§
Measurement	0.86	(.80–.92)	§	§	§	§	§	§	§	§
Geometry and spatial sense	0.84	(.78–.90)	0.83	(.77–.89)	§	§	§	§	§	§
Data analysis, statistics, and probability	0.85	(.80–.91)	0.81	(.75–.89)	0.81	(.76–.88)	§	§	§	§
Algebra and functions	0.88	(.84–.93)	0.84	(.77–.91)	0.84	(.79–.90)	0.84	(.78–.91)	§	§
§ These cells do not display data because this is a correlation matrix. Information is shown for the lower triangle only to eliminate redundant information. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2005 Mathematics Assessment.

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