Now showing items 1-5 of 5

    • Algunas consideraciones sobre el modelo lineal multivariado 

      Poltronieri Vargas, Jorge; Duarte Esquivel, Asdrúbal (2009-02-18)
      We consider the general linear model with the classical hypothesis. In particular we consider the variance analysis in two factors and we give explicitly the forms of the associated matrixes as well as the statistics of ...
    • Análisis de las estructuras de opinión pública 

      Poltronieri Vargas, Jorge (2009-02-18)
      En este trabajo se presentan los resultados de los análisis hechos a través de nueve años de investigación de las estructuras de la opinión pública en Costa Rica. La interpretación y los comentarios se hacen desde una doble ...
    • Estudio crítico del modelo de Manly-Parr 

      Poltronieri Vargas, Jorge (2009-02-18)
      Manly and Parr in 1968 obtain a model which give an estimation of the parameters of an animal population. The model presents some weakness on the specifications of the class of individual in the population. In the present ...
    • Estudio de opinión sobre el T.L.C. con EE.UU. 

      Poltronieri Vargas, Jorge (2009-02-25)
      We expose the results of an opinion survey on the Free Trade Agreement with theUnited States of America. The technique of Principal Component Analysis helped usto reveal the subjacent opinion in the Costarican comunity. ...
    • Productos de Kronecker 

      Poltronieri Vargas, Jorge (2009-02-18)
      We obtain the formulae of covariances between random, introducing the Kronecker’s products: asymmetrical and antisymmetrical.