A sample of blood pressure measurements is taken from a data set and those value

Question

A sample of blood pressure measurements is taken from a data set and those values (mm Hg) are listed below. The values are matched so that subjects each have systolic and diastolic measurements. Find the mean and median for each of the two samples and then compare the two sets of results. Are the measures of center the best statistics to use with these data? What else might be better? Systolic: 138138 103103 142142 149149 129129 102102 118118 159159 155155 156156 Diastolic: 8585 6262 8484 7373 5151 5656 8383 8181 7474 6969

Explanation / Answer

Systolic Diastolic 138 85 103 62 142 84 149 73 129 51 102 56 118 83 159 81 155 74 156 69 Mean (xbar) 135.1 71.8 Standard deviation 21.3669 12.13626 Coefficient of variation 15.81562 16.90287 Median 140 73.5 The variable which have less coefficient is more consisitent. Here Variable Systolic is less CV than Diastolic. Therefore Systolic is more consistent.

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