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skos:definition |
MSH: A distribution in which a variable is distributed like the sum of the squares of any given independent random variable, each of which has a normal distribution with mean of zero and variance of one. The chi-square test is a statistical test based on comparison of a test statistic to a chi-square distribution. The oldest of these tests are used to detect whether two or more population distributions differ from one another.,NCI: A mathematical distribution whose shape is determined by its one parameter, the degree(s) of freedom (df). This distribution is often used in inferential statistics in tests of significance.
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