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Grade | Number of initial conditioning contrasts 1 | Number of principal components 1 | Proportion of scale score variance 2 |
---|---|---|---|
8 | 1755 | 294 | .70 |
1 Excluding the constant term. 2 (Total Variance – Residual Variance)/Total Variance, where Total Variance consists of sampling, measurement, and other sources of error. NOTE: Single overall scale. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2016 Music Assessment. |
Grade | Number of principal components 1 | Number of principal components 1 | Proportion of scale score variance 2 |
---|---|---|---|
8 | 1752 | 290 | .63 |
1 Excluding the constant term. 2 (Total Variance – Residual Variance)/Total Variance, where Total Variance consists of sampling, measurement, and other sources of error. NOTE: Single overall scale. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2016 Visual Arts Assessment. |