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Download full textLevin, Joel R.; Subkoviak, Michael J. – 1975
Levin's (1975) sample-size determination procedure for completely randomized analysis of variance designs is extended to designs in which antecedent or blocking variables information is considered. In particular, a researcher's choice of designs is framed in terms of determining the respective sample sizes necessary to detect specified contrasts…
Descriptors: Analysis of Variance, Data Analysis, Data Collection, Educational Research
Gillmore, Gerald M.; And Others – 1976
Generalizability theory is described and applied to data collection methods for student ratings of instruction. Three generalizability coefficients (generalizing over both students and items, generalizing over students only, and generalizing over items only) are defined, and the appropriateness of each for various purposes is discussed.…
Descriptors: Analysis of Variance, College Faculty, College Students, Course Evaluation
Dick, Walter; Hagerty, Nancy – 1971
This text was developed on an autoinstructional basis to familiarize the reader with the various interpretations of reliability and validity, their measurement and evaluation, and factors influencing their measurement. The text enables those with prior knowledge of statistics to increase their understanding of variance and correlation. Review…
Descriptors: Analysis of Variance, Autoinstructional Aids, Correlation, Data Collection
