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NAEP Analysis and Scaling → Scale Linking and Transformation to the Reporting Metric → Transformation Constants for NAEP Assessments → Coefficients of Linear Transformation of the Subscales from the Calibrating Scale Units to the Units of the Reporting Scale, Mathematics National Assessment, by Subscale and Grade: 2015

NAEP Technical DocumentationCoefficients of Linear Transformation of the Subscales from the Calibrating Scale Units to the Units of the Reporting Scale, Mathematics National Assessment, by Subscale and Grade: 2015

Coefficients of linear transformation of the subscales from the calibrating scale units to the units of the reporting scale, mathematics national assessment, by subscale and grade: 2015
Grade	Subscale	A	B
4	Number properties and operations	32.64	242.41
	Measurement	35.45	239.55
	Geometry	25.80	239.03
	Data analysis, statistics, and probability	30.06	241.16
	Algebra	28.30	244.99
8	Number properties and operations	35.73	281.12
	Measurement	45.48	281.42
	Geometry	33.29	282.16
	Data analysis, statistics, and probability	41.20	285.61
	Algebra	38.31	289.97
12	Number properties and operations	32.93	149.18
	Measurement and geometry	33.55	152.72
	Data analysis, statistics, and probability	36.88	152.80
	Algebra	34.09	154.61
NOTE: Since 2005, measurement and geometry are combined at grade 12. Transformed scale scores below 0 were reset to values of 0, and any transformed scale scores greater than 300 (for grade 12) or 500 (for grades 4 and 8) were set to values of 300 or 500. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2015 Mathematics Assessment.

Last updated 18 November 2021 (ML)

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