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Effects of nonnormality on test statistics for one-way independent groups designs
(The British Psychological Society, 2012)
The data obtained from one-way independent groups designs is typically non-normal inform and rarely equally variable across treatment populations (i.e. population variances are heterogeneous). Consequently, the classical ...
A heteroscedastic, rank-based approach for analyzing 2 x 2 independent groups designs
(JMASM, Inc., 2009)
The ANOVA F is a widely used statistic in psychological research despite its shortcomings when the assumptions of normality and variance heterogeneity are violated. A Monte Carlo investigation compared Type I error and ...