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Elmore, Patricia B.; Rotou, Ourania – 2001
The increased interest in reporting effect sizes means that it is necessary to consider what should be included in a primer on effect sizes. A review of papers on effect sizes and commonly repeated statistical analyses suggests that it is important to discuss effect sizes relative to bivariate correlation, t-tests, analysis of variance/covariance,…
Descriptors: Effect Size, Research Design, Statistical Significance
Levin, Joel R. – Research in the Schools, 1998
Outlines concerns that must be addressed by those who advocate replacing statistical hypothesis-testing with alternative data-analysis strategies. Suggests that commonly recommended alternatives are not perfect and that various hypothesis-testing modifications can be implemented to make the process and its conclusions more credible. Hypothesis…
Descriptors: Data Analysis, Educational Research, Hypothesis Testing, Research Methodology