# p-value

Definition from Wiktionary, the free dictionary

## English[edit]

### Noun[edit]

**p-value** (*plural* **p-values**)

- (statistics) In statistical significance testing the p-value is the probability of obtaining a test statistic at least as extreme as the one that was actually observed, assuming that the null hypothesis is true.
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### References[edit]

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**1999**, SN Goodman, “Toward Evidence-Based Medical Statistics. 1: The P Value Fallacy.”, Annals of Internal Medicine, volume 130, pages 995–1004: