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Wijekumar, Kay; Hitchcock, John; Turner, Herb; Lei, PuiWa; Peck, Kyle – National Center for Education Evaluation and Regional Assistance, 2009
In an effort to identify instructional methods that might improve mathematics learning at the grade 4 level when used in a variety of educational settings under typical conditions, the REL Mid-Atlantic research team looked for promising, replicable practices that were being used broadly by teachers in U.S. schools, for which research showed…
Descriptors: Sample Size, Learning Activities, Academic Achievement, Teacher Surveys
Yap, Kim Onn – 1979
The accuracy with which regression models estimate treatment effects is dependent upon a number of conditions. The stability of the regression line (a function of sample size and correlation between pretest and posttest) is said to be the most important of these conditions. The utility of regression models is proportional to the size of the…
Descriptors: Correlation, Data Analysis, Educational Testing, Evaluation Methods
New York City Board of Education, Brooklyn, NY. Div. of Strategic Planning/Research and Development. – 1991
The Office of Research, Evaluation, and Assessment of the New York City public schools annually evaluates the AIDP English Instructional Services (EIS) program in reading and writing. Tests already in place in the High School Testing program are used as evaluation instruments. Program objectives include normal curve equivalent (NCE) gains of at…
Descriptors: Achievement Gains, Compensatory Education, English Instruction, Evaluation Methods