Alternatively, in textbook sections 16.5 through 16.7, a different modeling approach is discussed (the effects model) which is a traditional way to compute the ANOVA from datasets using a simple calculator to compute the various deviations.
Oct 20, 2020 · So you have to find a way to test all the pairs of means at the same time, in one test. The solution is an extension of the t test to multiple samples, and it’s called ANOVA. (If you have only two treatments, ANOVA computes the same p-value as a two-sample t test, but at the cost of extra effort.) How ANOVA Works