---
tag: 03N8C8ZR4B
kind: concept
name: Type I and type II errors
aliases: [type-i-error, type-ii-error, false-positive, false-negative]
msc: [62F03]
sources:
  - url: https://en.wikipedia.org/wiki/Type_I_and_type_II_errors
    locator: lead section
same_as:
  wikidata: Q989120
  wikipedia: Type I and type II errors
---

## Summary

A type I error is the rejection of a true null hypothesis, a false positive. A type II error is the failure to reject a false null hypothesis, a false negative.
The node [[type I and type II errors|0R41PVFA39]] gives the precise definition.