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Dynamic specification and misspecification in systems of demand equations: a testing strategy for model selection

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  • Ghazi Shukur

Abstract

The purpose of this study is to describe a misspecification testing strategy that is designed to ensure the appropriateness of the statistical assumptions underlying a system of equations. A systemwise test approach is used to test the statistical assumptions. The systemwise tests take into account information in, and interaction between, all equations in the system and can be used in a wide variety of applications where systems of equations are estimated. If the systemwise test leads to rejection, single equation F-test will then be used to help identify specific problems. The systemwise testing approach is illustrated by modelling Swedish consumer demand for milk. The example illustrates how the approach can be used to solve issues regarding dynamic specification of models, structural change and other forms of model misspecification.

Suggested Citation

  • Ghazi Shukur, 2002. "Dynamic specification and misspecification in systems of demand equations: a testing strategy for model selection," Applied Economics, Taylor & Francis Journals, vol. 34(6), pages 709-725.
  • Handle: RePEc:taf:applec:v:34:y:2002:i:6:p:709-725
    DOI: 10.1080/00036840110048465
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    Cited by:

    1. Tullaya Boonsaeng & Michael K. Wohlgenant, 2009. "A Dynamic Approach to Estimating and Testing Separability in U.S. Demand for Imported and Domestic Meats," Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, Canadian Agricultural Economics Society/Societe canadienne d'agroeconomie, vol. 57(1), pages 139-157, March.
    2. De Zhou & Xiaohua Yu & Thomas Herzfeld, 2015. "Dynamic food demand in urban China," China Agricultural Economic Review, Emerald Group Publishing, vol. 7(1), pages 27-44, February.
    3. Filippini, M. & Masiero, G. & Moschetti, K., 2009. "Regional consumption of antibiotics: A demand system approach," Economic Modelling, Elsevier, vol. 26(6), pages 1389-1397, November.
    4. Salman, Khalik & Arnesson, Leif & Sörensson, Anna & Shukur, Ghazi, 2009. "Estimating the Swedish and Norwegian International Tourism Demand using ISUR Technique," Working Paper Series in Economics and Institutions of Innovation 198, Royal Institute of Technology, CESIS - Centre of Excellence for Science and Innovation Studies.
    5. Fernando López & Jesús Mur & Ana Angulo, 2014. "Spatial model selection strategies in a SUR framework. The case of regional productivity in EU," The Annals of Regional Science, Springer;Western Regional Science Association, vol. 53(1), pages 197-220, August.
    6. Chitnis, Mona & Sorrell, Steve, 2015. "Living up to expectations: Estimating direct and indirect rebound effects for UK households," Energy Economics, Elsevier, vol. 52(S1), pages 100-116.
    7. Ngo, Quang Thanh, 2016. "Farmers’ adaptive measures to climate change induced natural shocks through past climate experiences in the Mekong River Delta, Vietnam," MPRA Paper 78055, University Library of Munich, Germany.

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