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

Test Score 30.7 28.8 26.6 26.4 26.2 25.9 22.1 21.9 20.3 17.3

Graduation% 77.4 95.3 42.0 47.6 59.3 85.0 60.8 66.0 41.2 57.0

a. Compute the covariance.

b. Compute the coefficient of correlation.