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Ohio School Milk Markets: An Analysis of Bidding


Robert H. Porter


Northwestern University - Department of Economics; National Bureau of Economic Research (NBER)

J. Douglas Zona


Charles River Associates (CRA)
May 1997

NBER Working Paper No. w6037

Abstract:     
We examine the institutional details of the school milk procurement process, bidding data, statements of dairy executives, and supply characteristics in Ohio during the 1980's. We compare the bidding behavior of a group of firms to a control group. We find that the behavior of each of the firms differs from that of the control group. We argue that the behavior of these firms is consistent with collusion. The estimated average effect of collusion on market prices is about six and one half percent, or roughly the cost of shipping school milk about 50 miles.

Number of Pages in PDF File: 55

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Date posted: July 20, 2000  

Suggested Citation

Porter, Robert H. and Zona, J. Douglas Douglas, Ohio School Milk Markets: An Analysis of Bidding (May 1997). NBER Working Paper No. w6037. Available at SSRN: http://ssrn.com/abstract=226447

Contact Information

Robert H. Porter (Contact Author)
Northwestern University - Department of Economics ( email )
2003 Sheridan Road
Evanston, IL 60208
United States
847-491-3491 (Phone)
847-491-7001 (Fax)
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
J. Douglas Zona
Charles River Associates (CRA) ( email )
5335 College Avenue
Suite 21
Oakland, CA 94618
United States
Feedback to SSRN (Beta)


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