Characterization of exponential distribution through bivariate regression of record values revisited

George P. Yanev

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arXiv · 1702.06195

Characterization of exponential distribution through bivariate regression of record values revisited

George P. Yanev

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Abstract

It is shown that the exponential is the only distribution which satisfies a certain regression equation. This characterization equation involves the conditional expectation (regression function) of a record value given a pair of record values, one previous and one future, as covariates. The underlying distribution is exponential if and only if the above regression equals the expected value of an appropriately defined Beta distributed random variable. In a particular case, the expected value of the Beta variable reduces to a weighted average of the covariates.

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George P. Yanev. 2017-02-20. Characterization of exponential distribution through bivariate regression of record values revisited. https://arxiv.org/abs/1702.06195

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