Journal
AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS
Volume 82, Issue 4, Pages 1022-1037Publisher
BLACKWELL PUBLISHERS
DOI: 10.1111/0002-9092.00100
Keywords
censored demand; jackknife; large cross-section data; minimum chi-squared estimator; scaling and translating
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The article develops an alternative econometric methodology to estimate a system of censored demand equations using a large cross-section data from Colombian urban households. The approach preserves the behavioral information expressed by zero expenditures and conforms with the requirements imposed by consumer theory in a way consistent with the random utility hypothesis. We motivate the choice of the Tobit model as a statistical representation of consumer behavior and introduce the methodology by specifying the AIDS model modified according to both a translating and scaling demographic transformation. We propose to estimate each demand equation in unrestricted form using the jackknife technique. We then recover the demand parameters imposing the cross-equations restrictions by using minimum distance estimation. The empirical results of the censored demand system for specific households of policy relevance are reported.
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