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  • Construction of multivariate distributions: a review of some recent results 

    Sarabia Alzaga, José María; Gómez Déniz, Emilio (Institut d'Estadística de Catalunya, 2008)
    Article
    Accés obert
    The construction of multivariate distributions is an active field of research in theoretical and applied statistics. In this paper some recent developments in this field are reviewed. Specifically, we study and review the ...
  • A note on interval estimation for the mean of inverse Gaussian distribution 

    Arefi, M.; Mohtashami Borzadaran, G.R.; Vaghei, Y. (Institut d'Estadística de Catalunya, 2008)
    Article
    Accés obert
    In this paper, we study the interval Estimation for the mean from inverse Gaussian distribution. This distribution is a member of the natural exponential families with cubic variance function. Also, we simulate the coverage ...
  • 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
    Accés obert
    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 ...
  • Empirical comparison between the Nelson-Aalen Estimator and the Naive Local Constant Estimator 

    Pérez Marín, Ana María (Institut d'Estadística de Catalunya, 2008)
    Article
    Accés obert
    The Nelson-Aalen estimator is widely used in biostatistics as a non-parametric estimator of the cumulative hazard function based on a right censored sample. A number of alternative estimators can be mentioned, namely, the ...
  • An alternative analysis of variance 

    Longford, Nicholas T. (Institut d'Estadística de Catalunya, 2008)
    Article
    Accés obert
    The one-way analysis of variance is a staple of elementary statistics courses. The hypothesis test of homogeneity of the means encourages the use of the selected-model based estimators which are usually assessed without ...
  • Canonical non-symmetrical correspondence analysis: an alternative in constrained ordination 

    Willems, P. M.; Galindo Villardon, Ma. Purificación (Institut d'Estadística de Catalunya, 2008)
    Article
    Accés obert
    Canonical non-symmetrical correspondence analysis is developed as an alternative method for constrained ordination, relating external information (e.g., environmental variables) with ecological data, considering species ...