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A review and comparison of methods of testing for heteroskedasticity in the linear regression model

Author

Listed:
  • Thomas Farrar
  • Renette Blignaut
  • Retha Luus
  • Sarel Steel

Abstract

This study reviews inferential methods for diagnosing heteroskedasticity in the linear regression model, classifying the methods into four types: deflator tests, auxiliary design tests, omnibus tests, and portmanteau tests. A Monte Carlo simulation experiment is used to compare the performance of deflator tests and the performance of auxiliary design and omnibus tests, using the metric of average excess power over size. Certain lesser-known tests (that are not included with some standard statistical software) are found to outperform better-known tests. For instance, the best-performing deflator test was the Evans-King test, and the best-performing auxiliary design and omnibus tests were Verbyla's test and the Cook-Weisberg test, and not standard methods such as White's test and the Breusch-Pagan-Koenker test.

Suggested Citation

  • Thomas Farrar & Renette Blignaut & Retha Luus & Sarel Steel, 2025. "A review and comparison of methods of testing for heteroskedasticity in the linear regression model," Journal of Applied Statistics, Taylor & Francis Journals, vol. 52(16), pages 3121-3150, December.
    • Handle: RePEc:taf:japsta:v:52:y:2025:i:16:p:3121-3150
    DOI: 10.1080/02664763.2025.2575038
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