Question: In Chapters 16, 17, and 18, we introduce regression analysis, which addresses the relationships among variables. One of the first applications of regression analysis was

In Chapters 16, 17, and 18, we introduce regression analysis, which addresses the relationships among variables. One of the first applications of regression analysis was to analyze the relationship between the heights of fathers and sons. Suppose that in a sample of 80 father–son combinations their heights were recorded.

a. Draw a graph that displays the relationship.

b. What is the direction of the relationship?

c. Does it appear that there is a linear relationship between the two variables? Explain.

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