Please explain Which of the following variable pairs is most

Which of the following variable pairs is most likely to exhibit a positive association for college students\'

Solution

Height and weight will most likely have positive assosiation as they effect each other but rest of them do not have any relation, such as shoe size wont effect GPA of a student 2 toppers can have a lager or small shoe size

8) Ans is C i.e. The linear relationship with horshpower explains 82.6% of the variation in gas mileage

As R² is 1 minus the sum of square of error, so it takes out the error part and we are left with the percentage of value that most likely that the line truly represents the relation betwwen the two.