The data below are the ages and systolic blood pressures (measured in millimeters of mercury) of 9 randomly selected adults. Calculate the correlation coefficient, r.
Age, x | 41 | 44 | 48 | 51 | 54 | 56 | 60 | 64 | 68 |
Pressure, y | 118 | 122 | 125 | 133 | 144 | 147 | 150 | 152 | 154 |
0.890
0.908
0.998
0.960