Published
2005-07-01
DETECCIÓN GRÁFICA DE LA MULTICOLINEALIDAD MEDIANTE EL H-PLOT DE LA INVERSA DE LA MATRIZ DE CORRELACIONES
MULTICOLINEARITY DETECTION BY MEANS OF THE h-PLOT OF THE CORRELATION MATRIX INVERSE
Keywords:
Multicolinealidad, h-plot, correlación parcial, coeficiente de inflación de varianza (es)Multicollinearity, h-plot, partial correlation, variance inflation factor (en)
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La multicolinealidad origina imprecisión en los estimadores de los coeficientes de un modelo lineal. En este trabajo proponemos un gráfico basado en la representación h-plot de la inversa de la matriz de correlaciones, que permite visualizar con cierto grado de aproximación las relaciones lineales entre las variables predictoras. En este dispositivo se obtienen representaciones aproximadas de los coeficientes de inflación de varianza de cada variable y de las correlaciones parciales entre ellas. Con el objeto de ilustrar el método, éste se aplicó en una investigación sobre la caracterización morfológica de jóvenes nadadores venezolanos.
Multicollinearity generates imprecision in the estimates of the coefficients in linear models. We propose to use the h-plot of the inverse of the correlation matrix to obtain a representation of the linear relations between the predictor variables. In the resulting plot the variance inflation factor of each variable and the partial correlation between them area roughly displayed. In order to illustrate the method it was applied in an anthropometric study of young Venezuelan swimmers.
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Ramírez, G., Vasquez, M., Camardiel, A., Perez, B., & Galindo, P. (2005). MULTICOLINEARITY DETECTION BY MEANS OF THE h-PLOT OF THE CORRELATION MATRIX INVERSE. Revista Colombiana De Estadística, 28(2), 207-219. https://revistas.unal.edu.co/index.php/estad/article/view/28879
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Copyright (c) 2005 Revista Colombiana de Estadística

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