A Biplot graphical tool to model the relationships between two sets of variables
Multivariate multiple regression analysis is used to model the relationships between two sets of variables, the y-set of response variables and the x-set of explaining variables. In trying to have useful information about the nature of the relationships between the two sets, Ter Braak (1990) proposed a graphical display taken up again by Ramírez et al. (2005) in an independent way. In this paper, indexes of the quality approach are considered: a) those y variables better explained by x variables, b) clusters of y variables whose predictions are strongly correlated and c) subsets of x variables more correlated with a specific y variable. The graphical device considered is a generalized GH-Biplot (Gabriel, 1971) using latent variables generated by a canonical correlation analysis. The graphical display was used to analyze the Human Development Index corresponding to the 23 states of Venezuela related to several social and economic indicators.
Biplot, canonical analysis, multivariate regression, human development.
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