An investigation has been conducted to determine whether there is a relationship between the salary paid to a Chief Executive Officer (CEO) and the productivity of that CEO as measured by the change in profits from the time the CEO was employed. The scatterplot plots the salary paid (x) against the change in profits (y) of a sample of CEOS. Without doing any calculations and according only to this scatter diagram, a reasonable coefficient of correlation (r) between x and y would be: Change in profits (y) O r = -1.86 Or = -0.61 Or = 2.19 O r = 0.41 Salary paid (x)