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Understanding Statistical Power in Cluster Randomized Trials: Challenges Posed by Differences in Notation and Terminology
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Spybrook, Jessaca; Hedges, Larry; Borenstein, Michael – Journal of Research on Educational Effectiveness, 2014
Research designs in which clusters are the unit of randomization are quite common in the social sciences. Given the multilevel nature of these studies, the power analyses for these studies are more complex than in a simple individually randomized trial. Tools are now available to help researchers conduct power analyses for cluster randomized…
Descriptors: Statistical Analysis, Research Design, Vocabulary, Coding