Literaturnachweis - Detailanzeige
| Autor/in | Dong, Nianbo |
|---|---|
| Institution | Society for Research on Educational Effectiveness (SREE) |
| Titel | Power Analysis to Detect the Effects of a Continuous Moderator in 2-Level Simple Cluster Random Assignment Experiments |
| Quelle | (2014), (7 Seiten)
PDF als Volltext kostenfreie Datei |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Monographie |
| Schlagwörter | Cluster Grouping; Randomized Controlled Trials; Statistical Analysis; Computation; Effect Size; Sample Size; Spreadsheets; Educational Research; Influences |
| Abstract | For intervention studies involving binary treatment variables, procedures for power analysis have been worked out and computerized estimation tools are generally available. The purpose of this study is to: (1) develop the statistical formulations for calculating statistical power, minimum detectable effect size (MDES) and its confidence interval, and minimum required sample size to detect the effects of a continuous moderator variable at level 1 or level 2 in two-level simple cluster random assignment designs; and (2) operatize these formulas in the enhanced version of PowerUp! to create spreadsheets for calculating MDES. This report only shows the preliminary results of the MDES for detecting a level-2 continuous moderator effect in two-level cluster randomized experiments. The formulas for statistical power and the minimum required sample sizes will be derived accordingly. (ERIC). |
| Anmerkungen | Society for Research on Educational Effectiveness. 2040 Sheridan Road, Evanston, IL 60208. Tel: 202-495-0920; Fax: 202-640-4401; e-mail: inquiries@sree.org; Web site: http://www.sree.org |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2020/1/01 |
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