Classification, Detection and Consequences of Data Error: Evidence from the Human Development Index
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We measure and examine data error in health, education and income statistics used to construct the Human Development Index. We identify three sources of data error which are due to data updating; formula revisions; and thresholds to classify a country’s development status. We propose a simple statistical framework to calculate country specific measures of data uncertainty and investigate how data error biases rank assignments. We find that up to 34% of countries are misclassified and, by replicating prior studies, we show that key estimated parameters vary by up to 100% due to data error.
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2011-01-01
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data error; statistics; Human Development Index; HDI classification; data uncertainty; health; education; income
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Required Publisher Statement: © Wiley. Final version published as: Wolff, H., Chong, H., & Auffhammer, M. (2011). Classification, detection and consequences of data error: Evidence from the Human Development Index. Economic Journal, 121(553), 843-870. Reprinted with permission. All rights reserved.
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