Participants' rankings of four alternatives during a citizens' summit. The participants ranked the alternatives twice (ranking1 and ranking 2). In each file the rankings of a group of participants is
Comparison of two populations with respect to their income inequalities is an important topic in economic and social studies. The Lorenz curve is a useful measure of income inequality. The Lorenz ordi
We propose an extension of the Wilcoxon–Mann–Whitney test to compare two groups when the outcome variable is latent. We empirically demonstrate that the test can have superior power properties relativ