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Data Aggregation and Vertical Price Transmission: An Experiment with German Food Prices

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  • von Cramon-Taubadel, Stephan
  • Loy, Jens-Peter
  • Meyer, Jochen

Abstract

The impact of cross sectional aggregation over individual retail stores on the estimation and testing of vertical price transmission between the wholesale and retail levels is investigated using a unique data set of individual retail prices in Germany. Systematic differences between the results of estimations using aggregated data on the one hand, and disaggregated data on the other, are discussed theoretically and confirmed empirically. The results suggest that estimation with aggregated data generates misleading conclusions about price transmission behavior at the level of the individual units (i.e. retail stores) that underlie these aggregates.

Suggested Citation

  • von Cramon-Taubadel, Stephan & Loy, Jens-Peter & Meyer, Jochen, 2006. "Data Aggregation and Vertical Price Transmission: An Experiment with German Food Prices," 2006 Annual Meeting, August 12-18, 2006, Queensland, Australia 25291, International Association of Agricultural Economists.
    • Handle: RePEc:ags:iaae06:25291
    DOI: 10.22004/ag.econ.25291
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    1. Bakucs, Lajos Zoltan & Falkowski, Jan & Ferto, Imre, 2012. "What causes asymmetric price transmission in agro-food sector? Meta-analysis perspective," 86th Annual Conference, April 16-18, 2012, Warwick University, Coventry, UK 134765, Agricultural Economics Society.
    2. Bakucs, Lajos Zoltan & Ferto, Imre, 2007. "Spatial Integration On The Hungarian Milk Market," 104th Seminar, September 5-8, 2007, Budapest, Hungary 7832, European Association of Agricultural Economists.
    3. Jens-Peter Loy & Thore Holm & Carsten Steinhagen & Thomas Glauben, 2015. "Cost pass-through in differentiated product markets: a disaggregated study for milk and butter," European Review of Agricultural Economics, Oxford University Press and the European Agricultural and Applied Economics Publications Foundation, vol. 42(3), pages 441-471.
    4. Csáki, Csaba & Jámbor, Attila, 2018. "Konvergencia vagy divergencia. Merre tart Kelet-Közép-Európa és a FÁK mezőgazdasága? [Convergence versus divergence: Where is agriculture in Central and Eastern Europe and the CIS countries heading," Közgazdasági Szemle (Economic Review - monthly of the Hungarian Academy of Sciences), Közgazdasági Szemle Alapítvány (Economic Review Foundation), vol. 0(10), pages 1048-1066.
    5. Judith Hillen, 2021. "Vertical price transmission in Swiss dairy and cheese value chains," Agricultural and Food Economics, Springer;Italian Society of Agricultural Economics (SIDEA), vol. 9(1), pages 1-21, December.
    6. Szenderak, J. & Jambor, A. & Potori, N., 2018. "Apples versus oranges: does interdependence between the European Union juice concentrate markets exist?," 2018 Conference, July 28-August 2, 2018, Vancouver, British Columbia 277511, International Association of Agricultural Economists.
    7. Loy, Jens-Peter & Holm, Thore & Steinhagen, Carsten, 2012. "Vertical Price Transmission In Differentiated Product Markets: A Disaggregated Study For Milk And Butter," 2012 Annual Meeting, August 12-14, 2012, Seattle, Washington 123284, Agricultural and Applied Economics Association.
    8. Götz, L. & von Cramon-Taubadel, S., 2008. "Asymmetric Price Transmission in the Israeli Citrus Export Sector in the Aftermath of Liberalization," Proceedings “Schriften der Gesellschaft für Wirtschafts- und Sozialwissenschaften des Landbaues e.V.”, German Association of Agricultural Economists (GEWISOLA), vol. 43, March.
    9. Götz, Linde & von Cramon-Taubadel, Stephan & Kachel, Yael, 2014. "Vertical Price Transmission in the International Fresh Fruit and Vegetable Supply Chain: Israeli Grapefruit Exports to the EU after Export Liberalisation," Quarterly Journal of International Agriculture, Humboldt-Universitaat zu Berlin, vol. 53(2), pages 1-22, May.
    10. Fabio Gaetano Santeramo, 2015. "Price Transmission in the European Tomatoes and Cauliflowers Sectors," Agribusiness, John Wiley & Sons, Ltd., vol. 31(3), pages 399-413, June.
    11. Holm, Thore & Loy, Jens-Peter & Steinhagen, Carsten, 2012. "Bio Auch Bei Der Preissetzung: Konsummilch In Deutschland," 52nd Annual Conference, Stuttgart, Germany, September 26-28, 2012 137159, German Association of Agricultural Economists (GEWISOLA).
    12. Holm, T. & Loy, J.-P. & Steinhagen, C., 2013. "Bio auch bei der Preissetzung: Konsummilch in Deutschland," Proceedings “Schriften der Gesellschaft für Wirtschafts- und Sozialwissenschaften des Landbaues e.V.”, German Association of Agricultural Economists (GEWISOLA), vol. 48, March.
    13. Schulte Hinrich & Musshoff Oliver, 2019. "Market Structure of the Feed Industry in Germany: Causing Asymmetric Spatial Price Transmission?," Journal of Agricultural & Food Industrial Organization, De Gruyter, vol. 17(1), pages 1-11, May.
    14. A. Ford Ramsey & Barry K. Goodwin & William F. Hahn & Matthew T. Holt, 2021. "Impacts of COVID‐19 and Price Transmission in U.S. Meat Markets," Agricultural Economics, International Association of Agricultural Economists, vol. 52(3), pages 441-458, May.
    15. Barry K. Goodwin & Matthew T. Holt & Jeffrey P. Prestemon, 2021. "Semi-parametric models of spatial market integration," Empirical Economics, Springer, vol. 61(5), pages 2335-2361, November.

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