Literaturnachweis - Detailanzeige
| Autor/in | Schochet, Peter Z. |
|---|---|
| Titel | Statistical Power for Random Assignment Evaluations of Education Programs |
| Quelle | In: Journal of Educational and Behavioral Statistics, 33 (2008) 1, S.62-87 (26 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 1076-9986 |
| DOI | 10.3102/1076998607302714 |
| Schlagwörter | Elementary School Students; Research Design; Standardized Tests; Program Evaluation; Experiments; Statistical Analysis; Scores; Sampling; Sample Size; Correlation; Regression (Statistics); Educational Research; Program Effectiveness |
| Abstract | This article examines theoretical and empirical issues related to the statistical power of impact estimates for experimental evaluations of education programs. The author considers designs where random assignment is conducted at the school, classroom, or student level, and employs a unified analytic framework using statistical methods from the literature. Focusing on standardized test scores of elementary school students, this article discusses appropriate precision standards and, for each design, the required number of schools to achieve those standards using empirical values of intraclass correlations, regression R[squared] values, and other parameters. Clustering effects vary by design but are typically large. Thus, large school samples are required for education trials, and many evaluations will only have sufficient power to detect precise impacts for relatively large subgroups of sites. (Contains 5 tables and 10 notes.) (Author). |
| Anmerkungen | SAGE Publications. 2455 Teller Road, Thousand Oaks, CA 91320. Tel: 800-818-7243; Tel: 805-499-9774; Fax: 800-583-2665; e-mail: journals@sagepub.com; Web site: http://sagepub.com |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2017/4/10 |
Literaturbeschaffung und Bestandsnachweise in Bibliotheken prüfen
Permalink als QR-Code
Inhalt auf sozialen Plattformen teilen (nur vorhanden, wenn Javascript eingeschaltet ist)
Teile diese Seite:
