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Estimating Economies of Scope Using Profit Function: A Dual Approach of the Normalized Quadratic Profit Function

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  • Gao, Zhifeng
  • Featherstone, Allen M.

Abstract

Theoretical relationships between the parameters of the normalized quadratic cost and profit functions were derived. The cost function was recovered from an estimated profit function, and thus economies of scope (EOS) were calculated using a profit function. An empirical example showed that the parameters in the true cost function could be precisely recovered using the estimated profit function. Estimating economies of scope measures using profit function have several merits over that using cost function, which include easier imposition of curvature, avoiding calculating EOS off the production frontier and capturing the inefficiency in the allocation of output quantities. The EOS calculated using profit function was based on the traditional concept of EOS can be easily compared with the EOS that was computed using cost function.

Suggested Citation

  • Gao, Zhifeng & Featherstone, Allen M., 2006. "Estimating Economies of Scope Using Profit Function: A Dual Approach of the Normalized Quadratic Profit Function," 2006 Annual meeting, July 23-26, Long Beach, CA 21103, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
  • Handle: RePEc:ags:aaea06:21103
    DOI: 10.22004/ag.econ.21103
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    1. Pokharel, Krishna P & Featherstone, Allen M, 2016. "A Nonparametric Approach to Estimate Multiproduct and Product-specific Scale and Scope Economies for Agricultural Cooperatives," 2016 Annual Meeting, July 31-August 2, Boston, Massachusetts 236182, Agricultural and Applied Economics Association.
    2. Vrankić, Ilko & Krpan, Mira, 2016. "Duality between the Short Run Profit and Production Function," Proceedings of the ENTRENOVA - ENTerprise REsearch InNOVAtion Conference (2016), Rovinj, Croatia, in: Proceedings of the ENTRENOVA - ENTerprise REsearch InNOVAtion Conference, Rovinj, Croatia, 8-9 September 2016, pages 147-154, IRENET - Society for Advancing Innovation and Research in Economy, Zagreb.
    3. Gao, Zhifeng & Moss, Charles B., 2013. "Testing Market Power with Profit Functions: a Dual Approach with Normalized Quadratic," 2013 Annual Meeting, February 2-5, 2013, Orlando, Florida 143105, Southern Agricultural Economics Association.
    4. Featherstone, Allen M. & Burbidge, Linda D., 2010. "A Comparison of Methods for Imposing Curvature on the Normalized Quadratic Indirect Profit Function," 2010 Annual Meeting, July 25-27, 2010, Denver, Colorado 61661, Agricultural and Applied Economics Association.
    5. Pierre Dupraz & Chalachew Temesgen Jemberie, 2012. "Farmland rental rate and marginal return to land: A french FADN perspective," Post-Print hal-01208927, HAL.

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