Modifying the exact test for a binomial proportion and comparisons with other approaches

Alan Hutson

Journal of Applied Statistics, 2006, vol. 33, issue 7, 679-690

Abstract: In this note we provide a simple continuity and tail-corrected approach to the standard exact test for a single binomial proportion commonly used in practice. We redefine the p-value for the two-sided alternative by noting the skewed distribution of the sample proportion under the null hypothesis. We illustrate that for both one and two-sided alternatives the coverage probabilities of the new methodology approaches more closely the desired type I error α and thus recommend these modifications to the applied statistician for consideration.

Keywords: Binomial confidence interval; exact test (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (1)

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DOI: 10.1080/02664760600708723

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