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 shape of a chi-square distribution?
  2. When is a chi-square test used as compared to when a 2-sample t-test is used?
  3. What is the null hypothesis in a chi-square test?
  4. What is the statistic in a chi-square test?
  5. Do the populations in question form the rows or columns of the observed frequency table?
  6. What is the test statistic in a chi-square test? [What is the symbol and the equation for this test statistic?]
  7. How are the degrees-of-freedom computed for a chi-square test?
  8. How is the expected frequencies table computed?
  9. What are the assumptions of a chi-square test?
  10. What characteristics define when a chi-square test will be used?
  11. Which R function is used to compute a p-value from the test statistic in a Chi-square test? Which arguments must be included?
  12. What questions do you have from this reading that you would like me to address? [Please be as specific as possible. Don’t just say “everything” or “I don’t understand anything.” Of course, you can ask questions about the reading before class on MS Teams (see link above).]