The president of World Aircraft Association wants to determine if there is a relationship between the number of vacation days provided to cabin crew members of eight airline companies and their monthly salaries (in thousands of euros). He obtained the following random sample on the number of vacation days and monthly salaries:

15, 72 16, 42 13, 5.52 16, 52 18, 7.52 15, 82 16, 6.82 12, 8.42 The first number for each observation is vacation days per month, and the second number is monthly salaries.

Plot the data and compute the covariance and the correlation coefficient.