Chapter 3: Relationships Between Two Quantitative VariablesIn this chapter, you'll learn to:
 Describe the pattern in a scatterplot, and decide what its shape tells about the relationship between the two variables
 Find a regression line through the center of a cloud of points to summarize the relationship
 Use the correlation as a measure of how spread out the points are from this line
 Use diagnostic tools to check for information the summaries don’t tell them, and decide what to do with that information
 Make shapechanging transformations to reexpress a curved relationship so they can use a line as a summary
