Testing for the Monotone Likelihood Ratio Assumption

Jutta Roosen and David Hennessy

Staff General Research Papers Archive from Iowa State University, Department of Economics

Abstract: Monotonicity of the likelihood ratio for conditioned densities is a common technical assumption in economic models. But we have found no empirical tests for its plausibility. This paper develops such a test based on the theory of order-restricted inference, which is robust with respect to the correlation structure of the distributions being compared. We apply the test to study the technology revealed by agricultural production experiments. For the data under scrutiny, the results support the assumption of the monotone likelihood ratio. In a second application, we find some support for the assumption of affiliation among bids cast in a multiple-round Vickrey auction for a consumption good. Keywords: affiliation, auction, likelihood ratio, order-restricted inference, stochastic order.

Date: 2003-02-13
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Published in Journal of Business & Economic Statistics, June 2004, vol. 22, pp. 358-366

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Related works:
Journal Article: Testing for the Monotone Likelihood Ratio Assumption (2004)
Working Paper: Testing for the Monotone Likelihood Ratio Assumption (2003)
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Persistent link: https://EconPapers.repec.org/RePEc:isu:genres:10193

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