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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 Combined National and State Assessment, by Subscale and Grade: 2017

NAEP Technical DocumentationCoefficients of Linear Transformation of the Subscales from the Calibrating Scale Units to the Units of the Reporting Scale, Mathematics Combined National and State Assessment, by Subscale and Grade: 2017

Coefficients of linear transformation of the subscales from the calibrating scale units to the units of the reporting scale, mathematics PBA combined national and state assessment, by subscale and grade: 2017
Grade	Subscale	A	B
4	Number properties and operations	34.50	242.56
	Measurement	36.49	238.84
	Geometry	25.14	235.48
	Data analysis, statistics, and probability	30.09	238.28
	Algebra	29.22	243.80
8	Number properties and operations	36.75	280.84
	Measurement	45.89	281.31
	Geometry	33.22	280.76
	Data analysis, statistics, and probability	42.04	282.97
	Algebra	39.60	289.86
NOTE: Transformed scale scores below 0 were reset to values of 0, and transformed scale scores greater than 500 were reset to values of 500. In 2017, grade 12 was not assessed. PBA = Paper-based assessment. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2017 Mathematics Assessment.

Coefficients of linear transformation of the subscales from the calibrating scale units to the units of the reporting scale, mathematics DBA combined national and state assessment, by subscale and grade: 2017
Grade	Subscale	A	B
4	Number properties and operations	35.10	242.86
	Measurement	37.49	238.71
	Geometry	25.08	234.74
	Data analysis, statistics, and probability	30.66	237.95
	Algebra	29.93	243.98
8	Number properties and operations	38.87	281.32
	Measurement	46.60	281.64
	Geometry	33.63	279.70
	Data analysis, statistics, and probability	44.78	282.00
	Algebra	39.44	291.20
NOTE: Transformed scale scores below 0 were reset to values of 0, and transformed scale scores greater than 500 were reset to values of 500. In 2017, grade 12 was not assessed. DBA = Digitally based assessment. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2017 Mathematics Assessment.

Last updated 30 August 2022 (SK)

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