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  • A note on the likelihood and moments of the skew-normal distribution 

    Martínez, E. H.; Varela, H.; Gómez, H. W.; Bolfarine, Heleno (Institut d'Estadística de Catalunya, 2008)
    Article
    Open Access
    In this paper an alternative approach to the one in Henze (1986) is proposed for deriving the odd moments of the skew-normal distribution considered in Azzalini (1985). The approach is based on a Pascal type triangle, which ...
  • Influence diagnostics in exponentiated-Weibull regression models with censored data. 

    Ortega, Edwin M. M.; Cancho, Vicente G.; Bolfarine, Heleno (Institut d'Estadística de Catalunya, 2006)
    Article
    Open Access
    Diagnostic methods have been an important tool in regression analysis to detect anomalies, such as departures from the error assumptions and the presence of outliers and influential observations with the fitted models. The ...