A sample of blood pressure measurements is taken for a group of adults, and those values (mm Hg) are listed below. The values are matched so that 10 subjects each have a systolic and diastolic measurement. Find the coefficient variation for each of the two samples, then compare the variation.

systolic : 117 128 158 97 156 121 116 136 126 121

diastolic : 79 78 75 51 90 89 59 66 71 82