Chi-squared Distribution
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Chi-squared DistributionStats/Distribution 2020. 1. 31. 15:21
1. Overview the chi-square distribution (also chi-squared or χ2-distribution) with k degrees of freedom is the distribution of a sum of the squares of k independent standard normal random variables. The chi-square distribution is a special case of the gamma distribution and is one of the most widely used probability distributions in inferential statistics, notably in hypothesis testing and in co..