### A Comparison of Power of the Test of Homogeneity of Variances

#### Abstract

The objective of this research is to compare power of the test of homogeneity of variances of 3, 4 and 5 populations by Levene’s test (W) Brown-Forsythe’s test (BF) and Bhandary and Dai’s test (BD). The methods are compared by considering the ability to control the probability of type I error and power of the test. The studied use simulated normal distribution data in small, medium and large size . The results show that Bhandary and Dai’s test can control probability of type I error for all cases and It has highest power of the test.** **

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**Keywords : *** *homogeneity of variances, Levene’s test, Brown-Forsythe’s test, Bhandary and Dai’s test

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PDF#### References

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