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Topic 13: Association - Interval Ratio variables (Pearson r)

Topic 9 introduces to students to correlations and the limitations to interpreting correlation as causation.

Lesson Objectives

  • understand how to create and read scatterplots including best-fit lines 
  • understand the ideas of causality and limitations of causality


Objectives Check

  • What does the correlation coefficient (Pearson's R) measure?
  • What range does the correlation coefficient have?
  • Why are scatterplots so useful?
  • What is a best fit line?

Suggested Readings

  • Bennett, Chapter 7: Correlation and Causality

Suggested Homework

Suggested SPSS Homework