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NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Scales → Correlations Among NAEP Subject Area Subscales → Conditional Correlations and Variances of the Subscales, by Grade, Mathematics Combined National and State Main Assessment: 2005
NAEP Technical DocumentationConditional correlations and variances of the subscales, grades 4 and 8 mathematics combined national and state main assessment: 2005
Grade Scale Number sense,
properties, and
operations
 Measurement Geometry and
spatial sense
Data analysis,
statistics, and
probability
Algebra and
functions
4 Number sense, properties, and operations § § § § §
Measurement 0.94 § § § §
Geometry and spatial sense 0.87 0.89 § § §
Data analysis, statistics, and probability 0.92 0.89 0.86 § §
Algebra and functions 0.94 0.91 0.89 0.92 §
Residual variance 0.55 0.57 0.59 0.55 0.58
8 Number sense, properties, and operations § § § § §
Measurement 0.92 § § § §
Geometry and spatial sense 0.84 0.92 § § §
Data analysis, statistics, and probability 0.92 0.91 0.86 § §
Algebra and functions 0.94 0.91 0.89 0.92 §
Residual variance 0.42 0.44 0.50 0.45 0.45
§ 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.

Conditional correlations and variances of the subscales, grade 12 mathematics national main assessment: 2005
Grade Scale Number sense,
properties, and
operations
Measurement & geometry, and
spatial sense1
Data analysis,
statistics, and
probability
Algebra and
functions
12 Number sense, properties, and operations  §  §  §  § 
Measurement & geometry and spatial sense1 0.89  §  §  § 
Data analysis, statistics, and probability  0.93  0.85  §  § 
Algebra and functions  0.93  0.94  0.89  § 
Residual variance  0.27  0.29  0.32  0.26 
§ These cells do not display data because this is a correlation matrix. Information is shown for the lower triangle only to eliminate redundant information.
1 At grade 12 only, the "measurement" and "geometry and spatial sense" subscales were combined for scaling.
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 21 July 2009 (JL)

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