Rank Statistics

Ranks and magnitude ranks are closely related with order and magnitude order statistics discussed in Chap. 2 , and are often used together with sign statistics. In this chapter, we first address the distributions of ranks and magnitude ranks in Sect. 3.1. Then, the notion of score functions are considered in Sect. 3.2, focusing mostly on locally optimum score functions. In Sect. 3.3, we consider the correlation coefficients among various statistics from i.i.d. random vectors.