BETA LEVEL By N., Pam M.S. - April 7, 2013 in statistics, refers to the probability of arriving at a false negative. As such, a person will make the wrong move of retaining the null hypothesis, thus, failing to reject it. BETA LEVEL: "In the beta level, it is possible to make the mistake of not rejecting the null hypothesis despite its being false." Related Psychology Terms BETA LEVEL SIGNIFICANCE LEVEL BINOMIAL TEST NONCENTRALITY PARAMETER TYPE II ERROR LIKELIHOOD RATIO T TEST BINOMIAL DISTRIBUTION DECISION RULE RISK LEVEL Cite this page: N., Pam M.S., "BETA LEVEL," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/beta-level/ (accessed September 27, 2020).