Cross Section Engel Curves over Time
Wolfgang Karl Härdle, Michael Jerison
Abstract
Wolfgang Karl Härdle, Michael Jerison
Abstract
Summary Methods for nonparametric estimation and comparison of cross section Engel curves are presented and applied to U.K. expenditure data. Real Engel curves (with quantity demanded and real total expenditure on the axes) vary over time, but their shapes are generally quite stable. Mean normalized Engel curves are defined and are found not to vary greatly over time. Consequences of such invariance for the testing of microeconomic demand models are investigated.
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Summary Methods for nonparametric estimation and comparison of cross section Engel curves are presented and applied to U.K. expenditure data. Real Engel curves (with quantity demanded and real total expenditure on the axes) vary over time, but their shapes are generally quite stable. Mean normalized Engel curves are defined and are found not to vary greatly over time. Consequences of such invariance for the testing of microeconomic demand models are investigated.
Key concepts: Engel curve, Nonparametric statistics, Section (typography), Econometrics, Economics, Mathematics, Cross section (physics), Statistics