Simultaneous Density Estimation of Several Income Distributions

J.S. Marron and H.-P. Schmitz

Econometric Theory, 1992, vol. 8, issue 4, 476-488

Abstract: The size distributions of net income in Great Britain changed systematically in the 1970s. This can be shown by visual comparison of nonparametric density estimates. Typical bandwidth selection methods, such as least squares and biased cross-validation, tend to hinder comparison, because of too much variability across curves. Hence, a method for finding an appropriate pooled bandwidth is developed. It is seen that this method is much more reliable than single curve cross-validation.

Date: 1992
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