Overview
Discussion Question 1
- Prompt: What is the purpose of a scatterplot? Why will you rarely find a perfect correlation between any two variables? Search “scatterplot” in Google News and report how it is used in the article.
- Discussion Question 2
- Prompt: Why can we not know the true score for a test? Explain the formula for understanding observed scores. What is included in any observed score? How do reliability and validity work together?