College football players trying out for the team are given a standardized intelligence test. The data below contains the average score on this and the graduation rate for football players at 10 different schools. Use the data to complete.

Test Score: 28.4 28.2 26.7 24.3 22.9 20.8 20.2 17.4 15.6 15.2

Graduation: 64.2 53.1 39.1 79.7 61.3 42.2 49.4 54.8 24.4 54.1

Compute the covariance.

Please show work.