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

Answer 1

	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.