The Influence of Aggregation on the Ordering of Distributions
AbstractResearchers often compare distributions using some criterion or other of inequality, poverty, or welfare. It is standard practice to base such comparative analysis on aggregated data. But will the results obtained be dependent on the degree of aggregation of the data? This paper argues, on the basis of a simulation study, that they will be, since the probability of obtaining a ranking can increase rapidly with the degree of aggregation. Aggregation exaggerates the differences between similar distributions and overlooks crossings at the lower tail. A change in research strategy is warranted: aggregation should be avoided where possible. Copyright 1996 by The London School of Economics and Political Science.
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Bibliographic InfoArticle provided by London School of Economics and Political Science in its journal Economica.
Volume (Year): 63 (1996)
Issue (Month): 250 (May)
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