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On the Fernández-Steel distribution: Inference and application

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  • Castillo, Nabor O.
  • Gómez, Héctor W.
  • Leiva, Víctor
  • Sanhueza, Antonio

Abstract

In this article, we perform statistical inference on a skew model that belongs to a class of distributions proposed by Fernández and Steel (1998). Specifically, we introduce two ways to represent this model by means of which moments and generation of random numbers can be obtained. In addition, we carry out estimation of the model parameters by moment and maximum likelihood methods. Asymptotic inference based on both of these methods is also produced. We analyze the expected Fisher information matrix associated with the model and highlight the fact that this does not have the singularity problem, as occurs with the corresponding information matrix of the skew-normal model introduced by Azzalini (1985). Furthermore, we conduct a simulation study to compare the performance of the moment and maximum likelihood estimators. Finally, an application based on real data is carried out.

Suggested Citation

  • Castillo, Nabor O. & Gómez, Héctor W. & Leiva, Víctor & Sanhueza, Antonio, 2011. "On the Fernández-Steel distribution: Inference and application," Computational Statistics & Data Analysis, Elsevier, vol. 55(11), pages 2951-2961, November.
    • Handle: RePEc:eee:csdana:v:55:y:2011:i:11:p:2951-2961
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    References listed on IDEAS

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    1. Leiva, Victor & Barros, Michelli & Paula, Gilberto A. & Galea, Manuel, 2007. "Influence diagnostics in log-Birnbaum-Saunders regression models with censored data," Computational Statistics & Data Analysis, Elsevier, vol. 51(12), pages 5694-5707, August.
    2. Vilca, Filidor & Santana, Lucia & Leiva, Víctor & Balakrishnan, N., 2011. "Estimation of extreme percentiles in Birnbaum-Saunders distributions," Computational Statistics & Data Analysis, Elsevier, vol. 55(4), pages 1665-1678, April.
    3. Adelchi Azzalini, 2005. "The Skew‐normal Distribution and Related Multivariate Families," Scandinavian Journal of Statistics, Danish Society for Theoretical Statistics;Finnish Statistical Society;Norwegian Statistical Association;Swedish Statistical Association, vol. 32(2), pages 159-188, June.
    4. Arellano-Valle, Reinaldo B. & Azzalini, Adelchi, 2008. "The centred parametrization for the multivariate skew-normal distribution," Journal of Multivariate Analysis, Elsevier, vol. 99(7), pages 1362-1382, August.
    5. Monica Chiogna, 2005. "A note on the asymptotic distribution of the maximum likelihood estimator for the scalar skew-normal distribution," Statistical Methods & Applications, Springer;Società Italiana di Statistica, vol. 14(3), pages 331-341, December.
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    5. Trottier, Denis-Alexandre & Ardia, David, 2016. "Moments of standardized Fernandez–Steel skewed distributions: Applications to the estimation of GARCH-type models," Finance Research Letters, Elsevier, vol. 18(C), pages 311-316.

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