We developed a new Fmax-test for the equality of variances in RCBD. Our method and simulation assessment has strengths in three important areas:
• The Fmax test shows good control of Type I error and strong power compared to other 8 tests, especially when the number of treatment groups is large. Our method provides an effective tool to handle RCBD with large treatment groups.
• The new Fmax-test method is very easy to perform and the critical points are listed in Table 1.
• Schaalje and Despain [20] reviewed variance homogeneity test in RCBD with fixed as well as random block effect and performed simulation studies with random block effects. In this work, variance homogeneity test in RCBD with fixed block effects is comprehensively reviewed and assessed by simulation studies.