Evaluation Of Norm Sample

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Evaluation of Norm Sample for KeyMath-3 DA
The following evaluation presents the components of the normative sample applied in the KeyMath-3 Diagnostic Assessment (KeyMath-3 DA). For reference, a norm sample characterizes as a selected sample of test-takers from various common characteristics such as gender, age, grade, race, ethnicity, socioeconomic status, or some combination thereof, for the purpose of creating test norms. The KeyMath-3 DA is a comprehensive, norm-referenced measure of essential mathematical concepts and skill which is untimed and individually administered (Connolly, p. 1, 2007). Furthermore, the test consists of 372 full color test items and 10 subtests covering three general math areas: Basic Concepts (numeration, algebra, geometry, measurement, data analysis and probability), Operations (mental computation and estimation; addition and subtraction; and multiplication and division), and Applications (foundations of problem solving and applied problem solving). Additionally, data from the U.S. Bureau of the Census (2004) reinforced the integrity of the normative sample to establish the target counts in age, grade and season, race/ethnicity, geographic region and socioeconomic status.
Ages/Grades of Students To accomplish an age norm sample, the KeyMath-3 DA tested students beginning from the ages of 4 years 6 months through 21 years 11 months. In order to accommodate the goal of testing 220 students per group, Connolly (2007) divided the groups such
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