Computational approach test in one-way fixed effects ANOVA models of log-normal samples

Document Type: Original Scientific Paper

Authors

Department of Statistics, Golestan University, Gorgan, Iran

Abstract

We apply a recently developed computational approach test (CAT) to the one-way fixed effects ANOVA models of log-normal data with unequal variances. The merits of the proposed test are numerically compared with the existing tests - the James second order test, the Welch test and the Alexander-Govern test - with respect to their sizes and powers in different combinations of parameters and various sample sizes. The simulation results demonstrate that the proposed method is satisfactory: its type I error probability is very close to the nominal level. We illustrate these approaches using a real example.

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