Critical Region
For significance level α, the critical region is
where Χ21 − α,k − 1 is the (1 − α)-quantile of the chi-squared distribution with k − 1 degrees of freedom. The null hypothesis is rejected if the test statistic is in the critical region. If the Cochran test rejects the null hypothesis of equally effective treatments, pairwise multiple comparisons can be made by applying Cochran's Q test on the two treatments of interest.
Read more about this topic: Cochran's Q Test
Famous quotes containing the words critical and/or region:
“Productive collaborations between family and school, therefore, will demand that parents and teachers recognize the critical importance of each other’s participation in the life of the child. This mutuality of knowledge, understanding, and empathy comes not only with a recognition of the child as the central purpose for the collaboration but also with a recognition of the need to maintain roles and relationships with children that are comprehensive, dynamic, and differentiated.”
—Sara Lawrence Lightfoot (20th century)
“When the excessively shy force themselves to be forward, they are frequently surprisingly unsubtle and overdirect and even rude: they have entered an extreme region beyond their normal personality, an area of social crime where gradations don’t count; unavailable to them are the instincts and taboos that booming extroverts, who know the territory of self-advancement far better, can rely on.”
—Nicholson Baker (b. 1957)