---
tag: 0GGKJGZF6D
kind: concept
name: P-value
aliases: [p-value, probability-value]
msc: [62F03]
sources:
  - url: https://en.wikipedia.org/wiki/P-value
    locator: lead section
same_as:
  wikidata: Q253255
  wikipedia: P-value
---

## Summary

The p-value of a test is the probability, under the null hypothesis, to get a result at least as extreme as the observed result. A small p-value is evidence against the null hypothesis.
The node [[p-value|0EHYZFZ4PK]] gives the precise definition.