Contribuciones al manova-biplotregiones de confianza alternativas
- I. R. Amaro 1
- J. L. Vicente-Villardón 2
- Mª. P. Galindo-Villardón 2
- 1 Universidad Central de Venezuela, Facultad de Ingeniería
- 2 *Universidad de Salamanca. Departamento de Estadística. Salamanca, España
ISSN: 0257-4306
Year of publication: 2008
Volume: 29
Issue: 3
Pages: 231-241
Type: Article
More publications in: Investigación Operacional
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.