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Download full textPorter, Kristin E.; Balu, Rekha – MDRC, 2016
Education systems are increasingly creating rich, longitudinal data sets with frequent, and even real-time, data updates of many student measures, including daily attendance, homework submissions, and exam scores. These data sets provide an opportunity for district and school staff members to move beyond an indicators-based approach and instead…
Descriptors: Models, Prediction, Statistical Analysis, Elementary Secondary Education
Olejnik, Stephen F.; Algina, James – 1986
Sampling distributions for ten tests for comparing population variances in a two group design were generated for several combinations of equal and unequal sample sizes, population means, and group variances when distributional forms differed. The ten procedures included: (1) O'Brien's (OB); (2) O'Brien's with adjusted degrees of freedom; (3)…
Descriptors: Error of Measurement, Evaluation Methods, Measurement Techniques, Nonparametric Statistics
Borg, Walter R. – 1984
By comparing the first and fourth editions of a research methods text, the author identifies and discusses some major changes in educational research metholodogy that have occurred over the past 20 years. Some of the changes relate to ethics and legal constraints in conducting research, research and development, evaluation research, the…
Descriptors: Classroom Observation Techniques, Educational Trends, Evaluation Methods, Legal Responsibility
