Spanish Abstract: La relación existente entre el riego y la rentabilidad de un activo financiero es una preocupación constante del inversionista a la hora de conformar su portafolio de inversión. La principal meta en la construcción del portafolio consiste en distribuir óptimamente la...

It is known that, when in the linear regression model there is a high degree of multicollinearity, the results obtained by using the Ordinary Least Squares (OLS) method are unstable. As a solution to this situation, in this paper we present the raised method, the ridge method and the orthogonal...

Migration movements in the south border of México with Guatemala, has motivated serious social, economic and politic un-stability in both countries. During the last decades of the XX-th century, the sites of the south zone have become in zones with high violence indexes, delinquency and...

Migration movements in the south border of México with Guatemala, has motivated serious social, economic and politic un-stability in both countries. During the last decades of the XX-th century, the sites of the south zone have become in zones with high violence indexes, delinquency and...

It is known that, when in the linear regression model there is a high degree of multicollinearity, the results obtained by using the Ordinary Least Squares (OLS) method are unstable. As a solution to this situation, in this paper we present the raised method, the ridge method and the orthogonal...

This paper presents empirical evidence of the effect of collective bargaining and unions on wages and its dispersion in Argentina.To this end,we use a recent and novel household survey and the decompositions method. Our results show that collective agreement coverage increases wages mainly in...

This paper presents empirical evidence of the effect of collective bargaining and unions on wages and its dispersion in Argentina.To this end,we use a recent and novel household survey and the decompositions method. Our results show that collective agreement coverage increases wages mainly in...

En este documento se establecen algunos hechos estilizados acerca del comportamiento de los precios regulados en Colombia. Se analiza el grado de rigidez de los precios en diferentes categorías de productos, con un énfasis particular en los precios regulados. En el documento se establece que...

Este trabajo presenta un análisis de los choques que afectan a los hogares, y de las estrategias que utilizan ante ellos. Se encuentra que efectivamente son los hogares pobres, los más vulnerables ante los choques y quienes cuentan con menores herramientas para manejar el riesgo. En este...

In this paper we study the effect of family and school background on students' academic performance, who attended public schools in Medellín. Two approaches are implemented in this work. Firstly, we investigate the effect of covariates on different segments of scores' distribution by quantile...