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New Goodness-of-Fit Tests for Pareto Distributions*

Published online by Cambridge University Press:  09 August 2013

Maria L. Rizzo
Maria L. Rizzo*
Affiliation:
Dept. of Mathematics & Statistics, Bowling Green State University, Bowling Green, OH 43403, E-Mail: [email protected], Phone: 419-372-7474, Fax: 419-372-6092
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Abstract

A new approach to goodness-of-fit for Pareto distributions is introduced. Based on Euclidean distances between sample elements, the family of statistics and tests is indexed by an exponent in (0,2) on Euclidean distance. The corresponding tests are statistically consistent and have excellent performance when applied to heavy-tailed distributions. The exponent can be tailored to the particular Pareto distribution. The goodness-of-fit statistic measures all types of differences between distributions, hence it is also applicable as a minimum distance estimator. Implementation of the test statistics is developed and applied to estimation of the tail index in three well known examples of claims data, and compared with the classical EDF statistics.

Keywords

Paretogoodness-of-fitheavy-tailGiniclaims
Type
Research Article
Information
ASTIN Bulletin: The Journal of the IAA , Volume 39 , Issue 2 , November 2009 , pp. 691 - 715
Copyright
Copyright © International Actuarial Association 2009

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Footnotes

*

This research was supported by the Casualty Actuarial Society through The Actuarial Foundation 2008 Individual Grants Program.

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