Critical values

Definition

Critical values are specific points on a distribution that help determine whether to reject or fail to reject the null hypothesis in hypothesis testing. They divide the rejection region from non-rejection region based on significance levels.

Related terms

Significance Level: In hypothesis testing, it is denoted by alpha (α) and represents the probability of rejecting a true null hypothesis.

Two-Tailed Test: A hypothesis test where both extreme ends of the distribution are considered for rejection regions.

One-Sample t-test: A type of t-test used when comparing a sample mean to a known population mean.