What is an F-ratio? Define all the technical terms in your answer.What is error variance and how is it calculated?Why would anyone ever want more than two (2) levels of an independent variable?If you were doing a study to see if a treatment causes a significant effect, what would it mean if within groups, variance was higher than between groups variance? If between groups variance was higher than within groups variance? Explain your answerWhat is the purpose of a post-hoc test with analysis of variance?What is probabilistic equivalence? Why is it important?