OTL web interface: outlier testing in lifetime data

Abstract

A web interface, named OTL, is developed to perform outlier analysis in exponential, Weibull, lognormal, and log-Laplace samples online over the Internet through Shiny and R. It is a tool to evaluate the exact or approximate distributions of block and consecutive test statistics for testing the presence of outliers that have been discussed over the years in the literature. As it allows for identifying outliers without using the classical extensive tables, OTL can be very useful to academics, policy-makers and executives to compare and understand the results of outlier testing procedures more efficiently in the case of lifetime data.

Keywords:

• Critical value
• Discordancy test
• Spacings
• User interface

Acknowledgment

The authors are grateful to the editor, and anonymous reviewers, for their constructive review of the manuscript that resulted in this improved version.

Additional information

Funding

C. T. Lin’s work was funded by the Ministry of Science and Technology of the Republic of China, Taiwan (Grant No. MOST 108-2118-M-032-002-MY2).