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 are the assumptions of an IVR?
  2. How are each of the assumptions of an IVR assessed?
  3. What specific conclusion is made if the H0 of the parallel lines test is rejected?
  4. What R function is used to perform multiple comparisons for slopes? What are its arguments?
  5. How does the results in the $contrasts and $emtrends portions of results from emtrends() differ (i.e., what is shown in each portion)?
  6. What specific conclusion is made if the H0 of the coincident lines test is rejected?
  7. What R function is used to perform multiple comparisons for intercepts? What are its arguments?
  8. How does the results in the $contrasts and $emmeans portions of results from emmeans() differ (i.e., what is shown in each portion)?
  9. What specifically is shown in under emmeans in the $emmeans portion of the results for emmeans()? How can you change this?