Comparison of the performances of parametric k-sample test procedures as an alternative to one-way analysis of variance

Authors

Gökhan Ocakoğlu, Aslı Ceren Macunluoglu
https://doi.org/10.18621/eurj.1030038
Objectives: The performances of the Welch test, the Alexander-Govern test, the Brown-Forsythe test and the James Second-Order test, which are among the parametric alternatives of one-way analysis of variance and included in the literature, to protect the Type-I error probability determined at the beginning of the trial at a nominal level, were compared with the F test.
Methods: Performance of the tests to protect Type-I error; in cases where the variances are homogeneous and heterogeneous, the sample sizes are balanced and unbalanced, the distribution of the data is in accordance with the normal distribution and the log-normal distribution, how it is affected by the change in the number of groups to be compared has been examined on simulation scenarios.
Results: The Welch test, the Alexander-Govern test and the James Second-Order test were not affected by the distribution and performed well in situations where variances were heterogeneous. The Brown-Forsythe test was not affected by the distribution, it performed well when the variance was homogeneous and the sample size in the groups to be compared was not equal.
Conclusions: The Welch test, the Alexander-Govern test and the James Second-Order test are the tests that can be recommended as an alternative to the F test.
Analysis of variance, conformity of normal distribution, parametric k-sample tests

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Ocakoğlu G, Macunluoglu AC. Comparison of the performances of parametric k-sample test procedures as an alternative to one-way analysis of variance. Eur Res J. 2023;9(1):39-48. doi:10.18621/eurj.1030038

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  • Article Type Research Article
  • Submitted February 21, 2026
  • Published January 3, 2023
  • Issue Vol. 9 No. 1 (2023)
  • Section Research Article
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