Shelly found that the coefficient of determination between the age of a runner x and the runner’s finishing position y was about 0.728. What can she conclude?

72.8% of the variation in the runner’s finishing position is explained by the runner’s age.


0.728% of the variation in the runner’s finishing position is explained by the runner’s age.


53% of the variation in the runner’s finishing position is explained by the runner’s age.


0.728 more variation in the runner’s finishing position is caused by the runner’s age.