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El presente artículo recoge los resultados de una investigación llevada a cabo con el fin de analizar, desde la perspectiva de la no similaridad, las distribuciones de los distintos estadísticos planteados por Dickey y Fuller para contrastar la presencia de raíz unitaria. Asimismo, se definen zonas de rechazo y aceptación de las hipótesis nulas para cada estadístico, considerando las distintas distribuciones del mismo, y se estudian las situaciones con las que nos podemos encontrar de cara a deducir...
This study seeks to analyse some important questions related to the Stochastic Frontier Model, such as the method proposed by Jondrow et al (1982) to separate the error term into its two components, and the measure of efficiency given by Timmer (1971). To this purpose, a Monte Carlo experiment has been carried out using the Half-Normal and Normal-Exponential specifications throughout the rank of the γ parameter. The estimation errors have been eliminated, so that the intrinsic variability of the...
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