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Thread: Fisher's exact test - two-tailed

  1. #1
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    Fisher's exact test - two-tailed

    Hi guys,
    I performed a fisher's exact test on Genstat and got this result:

    One-tailed significance level 0.563
    Mid-P value 0.371

    Two-tailed significance level
    Two times one-tailed significance level 1.126
    Mid-P value 0.741
    Sum of all outcomes with Prob<=Observed 1.000
    Mid-P value 0.807

    Based on what I've read, it's best to use a two-tailed p-value. Should I display 1.126 as my p-value in a scientific paper, or just p = 1.000, since probabilities are technically maximum of 1? (i understand that the 1.126 is derived from multiplying the one-tail value, but that's the limit of my knowledge..)

    Thank you!

  2. #2
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    rogojel's Avatar
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    Re: Fisher's exact test - two-tailed

    use the p-values not the significance levels.


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