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Choix entre diverses spécifications pour l’étude de la demande agrégée des produits agro-alimentaires en Tunisie

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  • Ayadi, Mohamed

    (Groupe de recherche en économie mathématique et quantitative (GREMAQ), Université des sciences sociales de Toulouse)

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    Abstract

    This paper aims to provide a specification of the demand system for the agro-alimentary products of Tunisia. The difference between the market structure of these products will make us consider the estimation of three different demand systems: the mixed system, the classical system and the reciprocal system. We will test these demand systems with the Hausman test and find that the statistical specification of the mixed one is better. Ce texte porte sur la spécification d’un système de demande des produits agro-alimentaires en Tunisie. La structure de marché rattachée à chaque produit étant différente, nous devrons considérer l’estimation de trois types de système de demande : le système mixte, le système classique et le système réciproque. Nous trouverons, à l’aide du test de Hausman, que le système mixte est supérieur aux deux autres du point de vue de la spécification statistique.

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    Bibliographic Info

    Article provided by Société Canadienne de Science Economique in its journal L'Actualité économique.

    Volume (Year): 64 (1988)
    Issue (Month): 2 (juin)
    Pages: 157-177

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    Handle: RePEc:ris:actuec:v:64:y:1988:i:2:p:157-177

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    1. Nakamura, Alice & Nakamura, Masao, 1981. "On the Relationships among Several Specification Error Tests Presented by Durbin, Wu, and Hausman," Econometrica, Econometric Society, vol. 49(6), pages 1583-88, November.
    2. Bronsard, Camille & Salvas-Bronsard, Lise, 1984. "On price exogeneity in complete demand systems," Journal of Econometrics, Elsevier, vol. 24(3), pages 235-247, March.
    3. J. A. Hausman, 1976. "Specification Tests in Econometrics," Working papers 185, Massachusetts Institute of Technology (MIT), Department of Economics.
    4. Oberhofer, W & Kmenta, J, 1974. "A General Procedure for Obtaining Maximum Likelihood Estimates in Generalized Regression Models," Econometrica, Econometric Society, vol. 42(3), pages 579-90, May.
    5. Bewley, R. A., 1983. "Tests of restrictions in large demand systems," European Economic Review, Elsevier, vol. 20(1-3), pages 257-269, January.
    6. Laitinen, Kenneth & Theil, Henri, 1979. "The Antonelli matrix and the reciprocal Slutsky matrix," Economics Letters, Elsevier, vol. 3(2), pages 153-157.
    7. Anderson, Gordon & Blundell, Richard, 1983. "Testing Restrictions in a Flexible Dynamic Demand System: An Application to Consumers' Expenditure in Canada," Review of Economic Studies, Wiley Blackwell, vol. 50(3), pages 397-410, July.
    8. Pudney, Stephen E, 1981. "An Empirical Method of Approximating the Separable Structure of Consumer Preferences," Review of Economic Studies, Wiley Blackwell, vol. 48(4), pages 561-77, October.
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