, Volume 40, Issue 4, pp 519–524 | Cite as

An empirical comparison of theZ-variance and Box-Scheffé tests for homogeneity of variance

  • Kenneth J. Levy


This brief report provides a comparison of theZ-variance and Box-Scheffé tests for homogeneity of variance. Both procedures are relatively simple to perform and both may be readily utilized in complex, multifactor designs. TheZ-variance test is not robust against non-normality; the Box-Scheffé test is robust against non-normality but is not nearly as powerful as theZ-variance test.


Public Policy Statistical Theory Empirical Comparison Multifactor Design 
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Copyright information

© Psychometric Society 1975

Authors and Affiliations

  • Kenneth J. Levy
    • 1
  1. 1.State University of New York at BuffaloUSA

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