Dependent variable reliability and determination of sample size

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Dependent variable reliability and determination of sample size

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1980

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Abstract

Arguments have recently been put forth that standard textbook procedures for determining the sample size necessary to achieve a certain level of power in a completely randomized design are incorrect when the dependent variable is fallible. In fact, however, there are several correct procedures-one of which is the standard textbook approach-because there are several ways of defining the magnitude of group differences. The standard formula is appropriate when group differences are defined relative to the within-group standard deviation of observed scores. Advantages and disadvantages of the various approaches are discussed.

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Maxwell, Scott E. (1980). Dependent variable reliability and determination of sample size. Applied Psychological Measurement, 4, 253-260. doi:10.1177/014662168000400211

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Maxwell, Scott E.. (1980). Dependent variable reliability and determination of sample size. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/100094.

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