Review questions

Reflect on your understanding by working through these review questions.

  1. What information does a contingency table provide?
  2. What is statistical inference?
  3. What is a chi-squared test used for?
  4. What do p-values and confidence intervals tell you?
  5. What is the difference between correlation and association?
  6. What kind of variable are t-tests suited to and what does a t-test tell you?
  7. What is the difference between a test of association and a test of significance?
  8. Describe the purpose of a scattergram and the kinds of relationship it can illustrate.