Title: Nonparametric Cusum Charts for Angular Data with Applications in Health Science and Astrophysics,
Abstract: This paper develops non-parametric rotation invariant CUSUMs suited to the
detection of changes in the mean direction as well as changes in the
concentration parameter of angular data. The properties of the CUSUMs are
illustrated by theoretical calculations, Monte Carlo simulation and application
to sequentially observed angular data from health science and astrophysics.