On binomial quantile and proportion bounds: With applications in engineering and informatics

Michael Short

Communications in Statistics - Theory and Methods, 2023, vol. 52, issue 12, 4183-4199

Abstract: The Binomial distribution is often used as a good approximation for many phenomena in engineering, medical, financial, and other applications involving discrete randomness. In many situations, for the purposes of risk management it may be required to estimate and/or track the probability of occurrence of a particular type of discrete event from a data sample, and then use such an estimate to predict outcomes from a larger sample. In this article, very simple but very accurate formulae are derived to support such actions. Analytic formulae are presented to tightly bound upper and lower estimates of a Binomial proportion to given confidence levels, and to tightly bound upper and lower estimates of a Binomial Quantile. Application to risk management are shown through synthetic and real-world examples, and accompanying analysis. It is argued that the formulae are simple enough to be embedded directly in machine learning and related analytics applications, and can also be manipulated algebraically to help analyze random behaviors in algorithms. The article concludes that the presented expressions are also useful to support decisions in situations in which specialist software may not be available.

Date: 2023
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DOI: 10.1080/03610926.2021.1986540

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