A group sequential test of circular data using the von Mises distribution

Year 2015, Volume: 44 Issue: 6, 1569 - 1578, 01.12.2015

K. Özgür Peker Sevil Bacanlı

Abstract

In this study, the group sequential test is suggested for the mean direction
parameter of the von Mises distribution when the concentration parameter
is known and unknown. An application of the proposed test is illustrated
by using a medical data of the patients, who were complained about internal rotation angles of the shoulder and treated in a rehabilitation and
physical therapy center in Eskisehir, Turkey. It is shown that the results of
the study demonstrate that the group sequential test can provide a great
advantage not only for linear data but also for circular data in terms of
sample size. 

Keywords

Sequential test, Circular data, Von Mises distribution, Mean direction

References

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