DECISION RULE By N., Pam M.S. - April 7, 2013 Hypothesis testing. The formal statement of a set of values of a test statistic that leads to a rejection of the null hypothesis. DECISION RULE: "The decision rule occurs in statistics." Related Psychology Terms CRITICAL REGION CRITICAL VALUE T TEST NONCENTRALITY PARAMETER SIGNIFICANCE LEVEL ACCEPTANCE REGION FMOX STATISTIC BARTLETT'S TEST RISK LEVEL WALD-WOLFOWITZ TEST Cite this page: N., Pam M.S., "DECISION RULE," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/decision-rule/ (accessed January 25, 2020).