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The Impact Of Data Aggregation On The Measurement Of Vertical Price Transmission: Evidence From German Food Prices

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

The impact of cross sectional aggregation over individual retail stores on the estimation and testing of vertical price transmission is investigated using a unique data set of individual retail prices. 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 results based on aggregated data generally cannot be used to draw conclusions about price transmission behaviour at the level of the individual data that underlies aggregates.

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Paper provided by American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association) in its series 2003 Annual meeting, July 27-30, Montreal, Canada with number 21987.

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Date of creation: 2003
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Handle: RePEc:ags:aaea03:21987
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