A Random Sample of 200 Men Aged Between 20 and 60

question 52

Essay

A random sample of 200 men aged between 20 and 60 was selected from a certain city. The linear correlationcoefficient between income and blood pressure was found to be r = 0.807. What does this imply? Does thissuggest that if a man gets a salary raise his blood pressure is likely to rise? Why or why not? What are likelylurking variables?4.2 Least-Squares Regression1 Find the least-squares regression line and use the line to make predictions.

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