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| F dis·tri·bu·tion (plural F dis·tri·bu·tions) |
noun |
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| Definition: |
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probability measure: a statistical measure of the spread or scattering of members of two observed random samples as a test of whether the samples have the same variability. The F distribution is obtained by taking the ratio of the chi-square distributions of the samples divided by the number of their degrees of freedom.
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| [Mid-20th century. After Sir Ronald Fisher (d. 1962), British statistician] |
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