---
title: False negative rate/risk (inferential testing)
description: "Same as the \"Type II error rate\", i.e. the risk that a statistical test will not reject the null hypothesis. Depends on the effect size (q.v.), the statistical power (q.v.) of the test and very much on the sample size(s).…"
url: "https://www.psyctc.org/psyctc/glossary2/false-negative-rate-risk-inferential-testing/"
updated: "2023-08-23"
category: All OM book glossary entries
---

# False negative rate/risk (inferential testing)

Same as the "Type II error rate", i.e. the risk that a statistical test will not reject the null hypothesis. Depends on the effect size (q.v.), the statistical power (q.v.) of the test and very much on the sample size(s). See [inferential testing](https://www.psyctc.org/psyctc/glossary2/inferential-testing-tests/) for more detail.