Imposing inequality restrictions: Efficiency gains from economic theory. (English) Zbl 0981.91061

Summary: Econometricians may feel that imposing inequality restrictions improves statistical efficiency, but no real empirical evidence exists. The results of a Monte Carlo experiment show that imposing the curvature conditions on a system of demand equations improves the MSEs on estimated elasticities from 3 to 50% depending on the signal-to-noise ratio and the sample size.


91B42 Consumer behavior, demand theory
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