Measuring Income Inequality Across Countries and Over Time: The Standardized World Income Inequality Database

Frederick Solt
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Frederick Solt: University of Iowa

No mwnje, SocArXiv from Center for Open Science

Abstract: Objective: This article documents wide-ranging revisions to the Standardized World Income Inequality Database (SWIID), which seeks to maximize the comparability of income inequality estimates for the broadest possible coverage of countries and years. Methods: Two k-fold cross-validations, by observation and by country, are used to evaluate the SWIID's success in predicting the Luxembourg Income Study (LIS), recognized in the field as setting the standard for comparability. Results: The cross-validations indicate that the new SWIID's estimates and their uncertainty are even more accurate than previous versions, extending its advantage in comparability over alternate income inequality datasets. Conclusion: Given its superior coverage and comparability, the SWIID remains the optimum source of data for broadly cross-national research on income inequality.

Date: 2019-07-20
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Persistent link: https://EconPapers.repec.org/RePEc:osf:socarx:mwnje

DOI: 10.31219/osf.io/mwnje

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