null hypothesis
noun[S]
ukusatheorythatstatesthat twogroupsthat are beingtestedwill beexpectedto show the sameresultsuntil this isprovednot to betrue
Examplesofnull hypothesis
null hypothesis
The alternative hypothesis, as the name suggests, is the alternative to thenullhypothesis: it states that there "is" some kind of relation.
From
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Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.Anullhypothesisis the general or default statement that nothing happened or changed.
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This example is from Wikipedia and may be reused under a CC BY-SA license.That is, it is used in time series analysis to test thenullhypothesisthat a time series is integrated of order 1.
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Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.The statement that is hoped or expected to be true instead of thenullhypothesisis the alternative hypothesis.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Thenullhypothesisassumes no relationship between variables in the population from which the sample is selected.
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Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.This class of data-sets is usually specified via a test statistic which is designed to measure the extent of apparent departure from thenullhypothesis.
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This example is from Wikipedia and may be reused under a CC BY-SA license.A familiarity with the range of tests available may suggest a particularnullhypothesisand test.
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Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.The concept of anullhypothesisis used differently in two approaches to statistical inference.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Unless a test with particularly high power is used, the idea of accepting thenullhypothesismay be dangerous.
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This example is from Wikipedia and may be reused under a CC BY-SA license.Thenullhypothesisis that two variances are the same so the proposed grouping is not meaningful.
FromThis example is from Wikipedia and may be reused under a CC BY-SA license.
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.