Question

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 of variation for each of the two samples: then compare the variation Systolic 120 130 159 96 154 121 115 135 125 119 Diastolic 80 77 74 52 90 89 56 63 70 80 The coefficient of variation for the systolic measurements is % (Type an integer or decimal rounded to one decimal place as needed.) The coefficient of variation for the diastolic measurements is 1% (Type an integer or decimal rounded to one decimal place as needed) Compare the variation The coefficients of variation for each data setare diastoic measurements Therefore, the systolic measurements vary y the

Answer 1

systelic (x-8) (x-8)2 Х 54.76 120 130 159 - 7.4 2.6 6:16 31.6 q6 - 31.4 26.6 154 121 115 135 -6.4 -12.4 7.6 998.56 98596 70756 40.96 153.76 57.76 5.76 To 56 Elx-)? 3088.4 12.5 - 9.4 -8.41 119 x=1974 274 Mean Ž = EX 1974 n. lo 2 Variance sypiala a 2 - I E (x-8) n-1 1 lo-l (3082.4) 11 342.488889 Standard deviation (sykolie) != 1 E(X1F) 2 nal ✓ 392.488889 18.5065

Diastalic y y 80 ។។ 74 52 go 6.4 3,9 0.9 -21.1 (y-j)2 47.61 15.21 0.81 445.21 285-61 252.81 899-41 102.01 9.61 47.61 1498.98 Elyyn 16:9 is. 9 -141 8 9 56 6.3 -10-1 - 3.1 6.9 70 80 731 E'y mean, Ey 731 10 7341 stand and deviattore diahelic by I {lyi-ý)" 2 0-1 (1498.9) dlo-1 (2 9652

" JE Xloi WY 2) olio mesiacmend Coefficient of variation variation for systolic x 700 18.5065 197.4 0 14.5262951 9@u 114.5 Coefficient variation for diasto lic xloo 12.9052 73.1 0176541724 ? 117.1 coefficient of variation for each dato set different very leu thein of = X100 " U are lithe diastelic 0