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null hypothesis

noun

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


null hypothesis

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
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of null hypothesis1

First recorded in 1930–35
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Compare Meanings

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

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Example Sentences

Then they collect evidence to test whether that null hypothesis is true.

Rejecting a null hypothesis doesn’t tell an investigator anything new.

Starting in the 1930s, Fisher devised a type of significance testing to analyze the likelihood of a null hypothesis, which a researcher could propose as either an effect or no effect.

The most common analysis procedure in fMRI experiments, null hypothesis tests, require that the researcher designate a statistical threshold.

If data disprove the null hypothesis, then they can conclude an effect of noise on whales.

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