The Gini coefficient is a downwardly biased measure of inequality in small populations when income is generated by one of three common distributions. The paper discusses the sources of bias and argues that this property is far more general. This has implications for (i) the comparison of...

The study shows that much of the variation in the findings of the literature on retail gasoline price dynamics is systematic rather than sample variation from using different data. Estimates of pass-through rates depend systematically on research design and features of the data, such as the...

Matched Model price indexes are generally thought to over-estimate the quality-adjusted price level. This bias stems from the fact that only a fraction of the models are sold in consecutive sampling periods and that the price/performance ratio of these models is worse than that of new models....