Monte Carlo permutation p-value audit
Calculate a plus-one tail probability and check the resolution of a random permutation test.
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The starting values are hypothetical. Use aggregate or synthetic inputs only.
Calculation results
- Plus-one p-value
- 0.005
- Smallest attainable p-value
- 0.001
- Resolution permits p ≤ threshold
- Yes
How to interpret the output
For randomly drawn permutations with the observed arrangement included separately, use (b+1)/(m+1). Define the tail and ties before counting. Exchangeability under the null and an appropriate permutation scheme are essential. Exhaustive enumeration uses a different denominator.
Method reference