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Data Aggregation and Information Loss


  • McKee, Gregory J.
  • Miljkovic, Dragan


Analysts often use a single average or otherwise aggregated price series to represent several geographic or product markets even when disaggregate data are available. We hypothesize that such an approach may not be appropriate under some circumstances, such as when only long-term relationships hold among price series or when homogeneous but relatively perishable products are considered. This question is of particular relevance in agriculture because of seasonality in production and harvest across various production regions, and the effect of changes in demand as substitute crops become available. We analyze this question in the context of fresh strawberry production. We find that in the case of the strawberry market, aggregate series are appropriate for long-term decision analysis, but some information loss occurs when conducting short-term decision analysis.

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  • McKee, Gregory J. & Miljkovic, Dragan, 2007. "Data Aggregation and Information Loss," 2007 Annual Meeting, July 29-August 1, 2007, Portland, Oregon 9843, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
  • Handle: RePEc:ags:aaea07:9843
    DOI: 10.22004/ag.econ.9843

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