null hypothesis

American  

noun

1. (in the statistical testing of a hypothesis) the hypothesis to be tested.

---

null hypothesis British  

noun

1. statistics the residual hypothesis if the alternative hypothesis tested against it fails to achieve a predetermined significance level Compare hypothesis testing alternative hypothesis

---

Etymology

Origin of null hypothesis

First recorded in 1930–35

Compare meaning

How does null-hypothesis compare to similar and commonly confused words? Explore the most common comparisons:

• null hypothesis vs. alternative hypothesis

Example Sentences

H0: The null hypothesis: It is a statement of no difference between a sample mean or proportion and a population mean or proportion.

From Textbooks • Nov. 29, 2017

To reject the null hypothesis we need significant evident of difference between the hypothesized value and the sample value.

From Textbooks • Nov. 29, 2017

This bias in favor of the null hypothesis is what gives rise to the statement "tyranny of the status quo" when discussing hypothesis testing and the scientific method.

From Textbooks • Nov. 29, 2017

Make a decision: Since the calculated t-value is in the tail we cannot accept the null hypothesis that there is no difference between the two groups.

From Textbooks • Nov. 29, 2017

Thus, we can reject the null hypothesis and tentatively accept that, for whatever reason, people do seem to wait until their birthdays to die.

From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos