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Analysis of Variance: What Is Your Statistical Software Actually Doing?
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Li, Jian; Lomax, Richard G. – Journal of Experimental Education, 2011
Users assume statistical software packages produce accurate results. In this article, the authors systematically examined Statistical Package for the Social Sciences (SPSS) and Statistical Analysis System (SAS) for 3 analysis of variance (ANOVA) designs, mixed-effects ANOVA, fixed-effects analysis of covariance (ANCOVA), and nested ANOVA. For each…
Descriptors: Social Sciences, Computer Software, Statistical Analysis, Models
Determining the Efficacy of Intervention: The Use of Effect Sizes for Data Analysis in Single-Subject Research.
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Kromrey, Jeffrey D.; Foster-Johnson, Lynn – Journal of Experimental Education, 1996
Presents use of the effect size as a descriptive statistic for single-subject research. Discusses the way in which effect sizes augment interpretation of results, and reviews four types of treatment effects with case studies. An appendix includes a sample computer program for computing effect sizes. (SLD)
Descriptors: Case Studies, Computer Software, Data Analysis, Effect Size