Convergence of Quantile and Spacings Processes with Applications

Abstract

The quantile process was shown by Bickel to converge in the uniform metric on intervals [ a, b] with $0 < a < b < 1$. By introducing appropriate new supremum metrics, this result is extended to all of (0, 1). Hence a natural process of ordered spacings from the uniform distribution converges in certain supremum metrics. This is used to establish the limiting normality of a large family of statistics based on ordered spacings, which can be used in testing for exponentiality. The non-null case is also considered.