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词汇 null hypothesis
释义

Definition of null hypothesis in English:

null hypothesis

noun
  • (in a statistical test) the hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error.

    (统计测试中的)零假设,虚假设

    Example sentencesExamples
    • It then reviews demographic differences within regions and tests a series of null hypotheses proposing no significant differences between regions based on the demographic factors.
    • Using their method requires the ability to draw samples from an approximation to the joint distribution of the test statistics when all null hypotheses are true.
    • We performed significance tests of the null hypothesis of constant population size for both data sets.
    • These analyses qualitatively or explicitly test null hypotheses of homogeneity of allele frequencies between or among populations.
    • Based on the statistical results, the null hypothesis is rejected for all variables.

Definition of null hypothesis in US English:

null hypothesis

nounnəl haɪˈpɑθəsəsnəl hīˈpäTHəsəs
  • (in a statistical test) the hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error.

    (统计测试中的)零假设,虚假设

    Example sentencesExamples
    • Based on the statistical results, the null hypothesis is rejected for all variables.
    • These analyses qualitatively or explicitly test null hypotheses of homogeneity of allele frequencies between or among populations.
    • Using their method requires the ability to draw samples from an approximation to the joint distribution of the test statistics when all null hypotheses are true.
    • We performed significance tests of the null hypothesis of constant population size for both data sets.
    • It then reviews demographic differences within regions and tests a series of null hypotheses proposing no significant differences between regions based on the demographic factors.
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