Some results on stochastic comparisons of random extremes from identical and non-identical random variables

In this article, we revisit the paper by Kundu et al., presenting new results for non-identical independent random variables. We derive sufficient conditions for preserving the hazard rate and reversed hazard rate orderings between the random maximum and minimum order statistics, respectively. Our results show that these preservation conditions also hold for independent and identically distributed random variables. Interestingly, we also demonstrate that the findings in Kundu et al. for the non-identical cases do not apply to the identical cases. The results and insights are demonstrated by numerical examples.

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Publication Details

Journal
Communication in Statistics- Theory and Methods
Published
2026-07-02
DOI
https://doi.org/10.1080/03610926.2026.2691786
Primary Topic
Financial Risk and Volatility Modeling
Type
article
Field-Weighted Citation Impact
0.00

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article

Some results on stochastic comparisons of random extremes from identical and non-identical random variables

Amarjit Kundu, Bidhan Modok, Shovan Chowdhury
Communication in Statistics- Theory and Methods
Financial Risk and Volatility Modeling
article

Some results on stochastic comparisons of random extremes from identical and non-identical random variables

Amarjit Kundu, Bidhan Modok, Shovan Chowdhury
article en

Abstract

In this article, we revisit the paper by Kundu et al., presenting new results for non-identical independent random variables. We derive sufficient conditions for preserving the hazard rate and reversed hazard rate orderings between the random maximum and minimum order statistics, respectively. Our results show that these preservation conditions also hold for independent and identically distributed random variables. Interestingly, we also demonstrate that the findings in Kundu et al. for the non-identical cases do not apply to the identical cases. The results and insights are demonstrated by numerical examples.

Communication in Statistics- Theory and Methods
Indian Institute of Management Kozhikode (IN), Raiganj University (IN), Indian Institute of Technology Kanpur (IN)
National Board for Higher Mathematics
Openalex Percentile: Top 6%
Financial Risk and Volatility Modeling
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Some results on stochastic comparisons of random extremes from identical and non-identical random variables — Amarjit Kundu, Bidhan Modok, et al. · Communication in Statistics- Theory and Methods (2026) | TGRS Research Map | TGRS