Sums of Pairwise Quasi-Asymptotically Independent Random Variables with Consistent Variation

2009-02-12articleStochastic Models134 citationsclosed

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Probability and Risk Models Probability and Statistical Research Statistical Distribution Estimation and Applications

Abstract

This article investigates the tail asymptotic behavior of the sum of pairwise quasi-asymptotically independent random variables with consistently varying tails. We prove that the tail probability of the sum is asymptotically equal to the sum of individual tail probabilities. This matches a feature of subexponential distributions. This result is then extended to weighted sums and random sums.

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