null hypothesis
noun1
- A hypothesis set up to be nullified or refuted in order to support an alternative hypothesis. When used, the null hypothesis is presumed true until statistical evidence in the form of a hypothesis test indicates otherwise. Therefore, the null and the alternative hypothesis must be mutually exclusive and exhaustive.
- A two proportion z-test allows for a comparison of two proportions, with the null hypothesis being that they are the same. — 2021
forms
null hypotheses