WANI Dictionary

P value

A p value is the probability of obtaining the event if the null hypothesis is true.

Definitions in the literature

• A p value is the likelihood of obtaining one’s data if the null hypothesis is true [1].
• In the frequentist hypothesis-testing framework, the P value is defined as the probability of observing events as extreme or more extreme than the observed data, given that the null hypothesis (H₀) is true [2].