This article uses K-means clustering to group countries using the information from the five areas of the Economic Freedom of the World (EFW) index. The resulting clusters of countries are similar but not identical to quartile groupings found using the overall EFW index. Simple comparisons of...

This paper uses a data set of daily sales at a single gasoline station over a seven year period to determine if consumers respond to relative price changes among the three grades of gasoline. Based on the reasoning of Alchian and Allen (1964) and Barzel (1976), market shares of higher quality...