Estimating engel curves : a generalisation of the P-Tobit model
Cross-section demand relationships are usually estimated using data from short-duration expenditure surveys. The interpretation of such observations is not straightforward, since a zero recorded expenditure may understate true demand and a positive expenditure overstates demand. Deaton and Irish have recently proposed and applied the P- Tobit technique to deal with this problem, but with little success. The present paper specifies a generalisation of their model and applies alternative estimators to two different sets of UK survey data.
Volume (Year): 1 (1988)
Issue (Month): 2 (Autumn)
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- Wales, T. J. & Woodland, A. D., 1983. "Estimation of consumer demand systems with binding non-negativity constraints," Journal of Econometrics, Elsevier, vol. 21(3), pages 263-285, April.
- Kay, J. A. & Keen, M. J. & Morris, C. N., 1984. "Estimating consumption from expenditure data," Journal of Public Economics, Elsevier, vol. 23(1-2), pages 169-181.
- Lee, Lung-Fei & Pitt, Mark M., 1984. "Microeconometric Models of Consumer and Producer Demand with Limited Dependent Variables," Bulletins 7495, University of Minnesota, Economic Development Center.
- Blundell, Richard & Meghir, Costas, 1987. "Bivariate alternatives to the Tobit model," Journal of Econometrics, Elsevier, vol. 34(1-2), pages 179-200.
- Waldman, Donald M., 1985. "Computation in duration models with heterogeneity," Journal of Econometrics, Elsevier, vol. 28(1), pages 127-134, April.
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