Table of Contents  |  Search Technical Documentation  |  References

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, Science National Main Assessment (Accommodations Permitted [R3]): 2000

NAEP Technical DocumentationConditional correlations and variances of the subscales, by grade, science national main assessment (accommodations permitted [R3]): 2000

Grade	Scale	Physical science	Earth science	Life science
4	Physical science	§	§	§
	Earth science	0.86	§	§
	Life science	0.94	0.84	§
	Residual variance	0.37	0.42	0.41
8	Physical science	§	§	§
	Earth science	0.88	§	§
	Life science	0.84	0.89	§
	Residual variance	0.36	0.38	0.36
12	Physical science	§	§	§
	Earth science	0.84	§	§
	Life science	0.89	0.86	§
	Residual variance	0.32	0.33	0.30
§This is a lower triangular symmetrical table. NOTE: Values in the table are estimates conditioned on the set of principal components included in the models used to estimate group score distributions. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2000 Science Assessment.

Printer-friendly Version