A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in millimeters of mercury, for a sample of 16 adults. The following table presents the results.

a. Construct a scatterplot of the diastolic blood pressure (y)
versus the systolic blood pressure (x).

b. Compute the correlation coefficient between systolic and diastolic blood pressure.

c. If someone’s diastolic pressure is above average, would you expect that person’s systolic pressure to be above or below average? Explain.

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Systolic Diastolic Systolic Diastolic 134 87 133 91 115 83 112 75 113 77 107 71 123 77 110 74 119 69 108 69 118 88 105 66 130 76 157 103 116 70 154 94