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Title:An Empirical Investigation of Biased Survey Data and an Attempted Cure PDF Logo
Authors:Prieger, James E.
Issue Date:2004
Series/Report no.:Working papers / University of California, Department of Economics 04,4
Abstract:In this paper I investigate response bias in survey data on annual driving mileage and evaluate the performance of a proposed remedy, Orbit. Individuals systematically exaggerate their deviation from the sample average, and using the self-reported data leads to misleading estimates of the income elasticity of travel mileage. I extend the Orbit procedure, which is designed to correct for reporting bias, to allow misreporting at the lower censoring point. Orbit fails to detect the nature of the bias and distorts the income elasticity estimate even further. The message for practitioners using biased data is therefore a cautionary one.
Subjects:Orbit
response bias
travel demand
semiparametric estimation
censoring
ordered choice data
Document Type:Working Paper
Appears in Collections:Working Papers, Department of Economics, UC Davis

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