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Default Bayesian goodness-of-fit tests for the skew-normal model

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  • S. Cabras
  • M. E. Castellanos

Abstract

In this paper we propose a series of goodness-of-fit tests for the family of skew-normal models when all parameters are unknown. As the null distributions of the considered test statistics depend only on asymmetry parameter, we used a default and proper prior on skewness parameter leading to the prior predictive p-value advocated by G. Box. Goodness-of-fit tests, here proposed, depend only on sample size and exhibit full agreement between nominal and actual size. They also have good power against local alternative models which also account for asymmetry in the data.

Suggested Citation

  • S. Cabras & M. E. Castellanos, 2009. "Default Bayesian goodness-of-fit tests for the skew-normal model," Journal of Applied Statistics, Taylor & Francis Journals, vol. 36(2), pages 223-232.
    • Handle: RePEc:taf:japsta:v:36:y:2009:i:2:p:223-232
    DOI: 10.1080/02664760802443988
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    References listed on IDEAS

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