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NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Scales → Correlations Among NAEP Subject Area Subscales → Average Correlations and Ranges of Correlations Among the Science Scales for 45 Jurisdictions for Grade 8, Operational Science Combined National and State Main Assessment: 2005

NAEP Technical DocumentationAverage marginal correlations and ranges of correlations among the science scales for 45 jurisdictions for grade 8, operational science combined national and state main assessment: 2005

Scale	Physical science		Earth science
	Average correlation	Range of correlations	Average correlation	Range of correlations
Physical science	§	§	§	§
Earth science	0.86	.79-.91	§	§
Life science	0.88	.81–.92	0.84	.79–.92
§ 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 Science Assessment.

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