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."
Cite this page: N., Pam M.S., "BETA LEVEL," in, April 7, 2013, (accessed September 27, 2020).