Bivariate Normal Distribution for Indeterminacy: Characteristics and Data Generation Algorithm

Authors

  • Muhammad Aslam Department of Statistics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
  • Muhammad Saleem Department of Industrial Engineering, Faculty of Engineering, King Abdulaziz University, Rabigh, 21911, Saudi Arabia

DOI:

https://doi.org/10.13052/jrss0974-8024.1911

Keywords:

Classical statistics, simulation, uncertainty, bivariate normal distribution, algorithm

Abstract

The existing bivariate normal distribution and its related algorithms in classical statistics cannot account for the degree of indeterminacy when applied under uncertainty. To address this gap, the main objective of this manuscript is to introduce bivariate neutrosophic random variables and study their properties through expectation and variance. In this paper, we also propose the neutrosophic bivariate normal distribution along with some of its key properties. Furthermore, we develop an algorithm based on the proposed distribution to generate imprecise data. A detailed simulation is carried out to examine the effect of the degree of indeterminacy on the data. The comparative study reveals that the variates produced by the proposed algorithm differ from those generated by the existing algorithm. To demonstrate its practical use, we provide a numerical example applying the bivariate normal distribution. Based on the simulation, comparative study, and numerical example, we recommend incorporating the degree of indeterminacy when generating data from the bivariate normal distribution under uncertainty.

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Author Biographies

Muhammad Aslam, Department of Statistics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia

Muhammad Aslam was the first to introduce the field of Neutrosophic Statistical Quality Control (NSQC). He is the founder of several branches of neutrosophic statistics, including neutrosophic inferential statistics, advanced neutrosophic distribution theory, neutrosophic survey sampling, and neutrosophic design of experiments, neutrosophic reliability analysis, and neutrosophic index numbers. His pioneering contributions established the theoretical foundation of neutrosophic statistics for inspection, inference, and process control. Prof. Aslam originally developed and extended the principles of classical statistics into neutrosophic statistics in 2018, marking a major advancement in statistical science. He was the first to introduce the group acceptance sampling plan for testing, as well as repetitive sampling and multiple dependent state sampling in control charts. He also pioneered the mixed control chart combining attribute and variable sampling.

Muhammad Saleem, Department of Industrial Engineering, Faculty of Engineering, King Abdulaziz University, Rabigh, 21911, Saudi Arabia

Muhammad Saleem received the master’s degree in computer science & communications engineering from the University of Duisburg-Essen, Germany, and the Ph.D. degree in engineering from the University of Federal Armed Forces, Munich, Germany. He has more than 15 years of teaching, research, and administrative experience with the Department of Industrial Engineering, University of Duisburg-Essen, and King Abdulaziz University, Saudi Arabia. Dr. Saleem is currently an Associate Professor with King Abdulaziz University and is actively involved in curriculum development and accreditation processes of engineering programs. His research interests include industrial quality control, artificial intelligence, and engineering management.

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Published

2026-01-13

How to Cite

Aslam, M. ., & Saleem, M. . (2026). Bivariate Normal Distribution for Indeterminacy: Characteristics and Data Generation Algorithm. Journal of Reliability and Statistical Studies, 19(01), 1–22. https://doi.org/10.13052/jrss0974-8024.1911

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