In Asia inequality in income between countries is more important than inequality within countries. In Africa, Latin America, and western Europe and North America, by contrast, there are only small differences between countries; inequality within countries is more important. And when countries...

Although exam scores are reported using numerical values, their measurement scale is ordinal: They depend on the difficulty distribution of the questions in the exam. Hence, population groups or countries should not be ranked according to average exam scores because there may exist an admissible...

Although exam scores are reported using numerical values, their measurement scale is ordinal: They depend on the difficulty distribution of the questions in the exam. Hence, population groups or countries should not be ranked according to average exam scores because there may exist an admissible...