Non central distributions, Advanced Statistics

Non central distributions is the series of probability distributions each of which is the adaptation of one of the standard sampling distributions like the chi-squared distribution, the F-distribution or Student's t-distribution for distribution of some of the test statistic under the alternative hypothesis or assumptions. Such distributions permit the power of the corresponding hypothesis tests to be calculated. See also non central chi-squared distribution, non central F-distribution and non central t-distribution. 

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