Contribuciones al manova-biplot: regiones de confianza alternativas

  1. I. R. Amaro 1
  2. J. L. Vicente-Villardón 2
  3. Mª. P. Galindo-Villardón 2
  1. 1 Universidad Central de Venezuela, Facultad de Ingeniería, Núcleo de Cagua. Cagua 2122. Venezuela
  2. 2 Universidad de Salamanca. Departamento de Estadística. Salamanca, España
Journal:
Investigación Operacional

ISSN: 2224-5405

Year of publication: 2008

Volume: 29

Issue: 3

Pages: 231-241

Type: Article

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Abstract

We propose elliptical confidence regions for the Manova-Biplot, instead of the traditionally used confidence circles. These regions are constructed taken into account the sample variability of the representation axes and are based on the mathematical development used by Krzanowski (1989). An application of the theoretical results to a data set, shows that the areas of the ellipses are considerabily greater than the areas of the circles. These suggest that elliptical confidence regions are probabilistically more accurate than the traditional circles.

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