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Type I Error Rate and Power of Rank Transform ANOVA When Populations Are Non-Normal and Have Unequal Variances.

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Olejnik, Stephen F.; Algina, James – 1985

This paper examined the rank transformation approach to analysis of variance as a solution to the Behrens-Fisher problem. Using simulation methodology four parameters were manipulated for the two group design: (1) ratio of population variances; (2) distribution form; (3) sample size and (4) population mean difference. The results indicated that…

Descriptors: Analysis of Variance, Computer Simulation, Error of Measurement, Hypothesis Testing

The Measurement of Developmental Variables: An Overview.

Santmire, Toni E. – 1984

The purpose of this paper is to discuss ways in which developmental psychology suffers from the lack of an appropriate technology of measurement and statistical analysis. The paper begins by noting that developmental psychology is the study of change; that individuals develop through a succession of "stages" which are separated by…

Descriptors: Data Analysis, Data Collection, Developmental Psychology, Developmental Stages