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Fisher’s Exact Test

Fisher’s Exact Test SummaryThis paper reviews the problems that bedevil the selection of an appropriate test for the analysis of a 2 times 2 table. In contradiction to an earlier paper, the author now argues the case for the use of Fisher’s exact test. It is noted that all test statistics for the 2 times 2 table have discrete distributions and it is suggested that it is irrational to prescribe an unattainable fixed significance level. The use of mid-p is suggested, if a formula is required for prescribing a variable tail probability. The problems of two-tail tests are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Royal Statistical Society Series A (Statistics in Society) Oxford University Press

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References (36)

Copyright
© 1992 Royal Statistical Society
ISSN
0964-1998
eISSN
1467-985X
DOI
10.2307/2982890
Publisher site
See Article on Publisher Site

Abstract

SummaryThis paper reviews the problems that bedevil the selection of an appropriate test for the analysis of a 2 times 2 table. In contradiction to an earlier paper, the author now argues the case for the use of Fisher’s exact test. It is noted that all test statistics for the 2 times 2 table have discrete distributions and it is suggested that it is irrational to prescribe an unattainable fixed significance level. The use of mid-p is suggested, if a formula is required for prescribing a variable tail probability. The problems of two-tail tests are discussed.

Journal

Journal of the Royal Statistical Society Series A (Statistics in Society)Oxford University Press

Published: Dec 5, 2018

Keywords: goodness of fit; mid- p; significance; test procedures; two-tailed tests; 2 times 2 table

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