KnowraChi-squared distributionLinked fromLinked fromThe 6 pages that link to Chi-squared distribution, each with the reason it gives.All 6Broader topic 1Related 5Likelihood-ratio testRelated: Under Wilks' theorem, this distribution calibrates the statistic's tail probability.Degrees of freedomRelated: Its degrees of freedom equal the number of independent squared components.Student's t-distributionRelated: A chi-squared variable supplies the random variance estimate in the t-distribution's construction.Chi-squared testRelated: Under the null hypothesis, the statistic is compared with this distribution.Cochran's theoremRelated: Each qualifying quadratic form has a scaled chi-squared distribution, with degrees of freedom determined by matrix rank.