Use the preparation materials to prepare hand-written answers for the following questions. Please ask any questions on the "Questions -- Preparation Guide" on the course Team (see link on the homepage).
  1. What is the general F-ratio test statistic? Write down three versions of it (the general version, not the version specific to the different tests).
  2. What is a parallel lines test?
  3. How do the hypotheses differ in a parallel lines test?
  4. What do the hypotheses look like, graphically, in a parallel lines test?
  5. What is a coincident lines test?
  6. How do the hypotheses differ in a coincident lines test?
  7. What do the hypotheses look like, graphically, in a coincident lines test?
  8. What is a relationship test?
  9. How do the hypotheses differ in a relationship test?
  10. What do the hypotheses look like, graphically, in a relationship test?
  11. Which of the parallel lines, coincident lines, or relationship test must be conducted first? Explain why.
  12. When should a coincident lines test be conducted? Why?
  13. What conclusion can be made if the lines are not coincident but they are parallel? Explain why.
  14. How do you efficiently get p-values for all three tests in R?
  15. What specifically can you conclude if the parallel lines test rejects H0 and there are more than two groups?
  16. What specifically can you conclude if the parallel lines test does not reject H0, the coincident lines test rejects H0, and there are more than two groups?
  17. What specifically can you conclude if the parallel lines and coincident lines tests both reject H0, the relationship test does not reject H0, and there are more than two groups?