Continuity Correction for Fisher's Exact Probability Test

John E. Overall

Journal of Educational and Behavioral Statistics, 1980, vol. 5, issue 2, 177-190

Abstract: Fisher's exact probability test is severely conservative when interpreted with reference to conventional alpha levels due to the discontinuity of the sampling distribution for 2 × 2 tables. An adjustment of the cell frequencies is proposed that results in a correction for continuity with appropriate alpha protection and increased power.

Keywords: Exact probability; 2 × 2 tables; Continuity correction (search for similar items in EconPapers)
Date: 1980
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Persistent link: https://EconPapers.repec.org/RePEc:sae:jedbes:v:5:y:1980:i:2:p:177-190

DOI: 10.3102/10769986005002177

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