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Funciones de costo translogarítmicas. Una aplicación para el sector manufacturero mexicano

  • Salgado Banda, Héctor

    (Secretaría de Economía, México)

  • Bernal Verdugo, Lorenzo Ernesto

    (Universidad de Chicago y Banco de México)

We use translog cost functions to estimate own-price and substitution elasticities of input demands, economies of scale and average costs in Mexican manufacturin. Data from the Mexican Annual Industrial Survey is used for 1996, 2000 and 2003. We show that a model that allows for nonhomotheticity and nonunitary elasticities of substitution is appropriate to represent the production structure. Allen-Uzawa elasticities indicate the existence of substitution possibilities amongst inputs. The demand for electricity is essentially unitary elastic. All cross-price elasticities are less than one. Both scale economies and average costs diminish as the size of activity class increases. Economies of scale increased for any level of output. The differences in average costs between small and large activity classes were reduced and some disparities prevail in a number of manufacturing groups.// Se utiliza funciones de costos translogarítmicas para estimar elasticidades precio y de sustitución de las demandas por insumos, economías de escala y costos medios en las manufacturas mexicanas. Se analiza datos de la Encuesta Industrial Anual para 1996, 2000 y 2003. Se muestra que un modelo que no permite homoteticidad ni elasticidades unitarias en la función de costos parece ser el más adecuado para representar la estructura de producción. Elasticidades de Allen-Uzawa indican la existencia de posibilidades de sustitución entre los insumos. La demanda por electricidad es de elasticidad unitaria. Todas las elasticidades cruzadas son menores a 1. Tanto las economías de escala como los costos medios disminuyen conforme el tamaño de las clases de actividad aumenta. Las economías de escala aumentan para cualquier nivel de producción. Las diferencias en costos medios entre pequeñas y grandes clases de actividad se han reducido mientras que algunas disparidades se mantienen en ciertos grupos manufactureros.

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Article provided by Fondo de Cultura Económica in its journal El Trimestre Económico.

Volume (Year): LXXVII (3) (2010)
Issue (Month): 307 (julio-septiembre)
Pages: 683-717

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Handle: RePEc:elt:journl:v:77:y:2010:i:307:p:683-717
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