Question: At a large state university seven undergraduate students who are majoring in economics were randomly selected from the population and surveyed. Two of the survey questions asked were:
(1) What was your grade-point average (GPA) in the preceding term?
(2) What was the average number of hours spent per week last term in the Orange and Brew? The Orange and Brew is a favorite and only watering hole on campus. Using the data below, estimate with ordinary least squares the equation
G = α + βH
where G is GPA and H is hours per week in Orange and Brew. What is the expected sign for β? Do the data support your expectations?
