Economic Information Versus Quality Variation in Cross-Country Data
30 Pages Posted: 16 Feb 2001
Date Written: December 2000
Abstract
Data quality in the Penn World Tables varies systematically across countries that have different growth rates and at different stages of economic development, thus introducing measurement error correlated with variables of economic interest. We explore the seriousness of this problem with three examples from the literature, showing that the problem appears to be minor in growth convergence regressions but serious in estimating the effect of growth volatility on the average growth rate and in a cross-country test of the Permanent Income Hypothesis. The results suggest, at the very least, a need for performing appropriate sensitivity tests before drawing conclusions from analyses based on available cross-country data.
Keywords: Data quality, cross-country comparisons
JEL Classification: E21, 047, O57
Suggested Citation: Suggested Citation
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