<prompt> A study was conducted on two different samples for comparing variation between DBP and Vitamin D. Diastolic blood pressure normal is 110 with standard deviation 11 and vitamin D levels normal 18 with standard deviation 3. Which of the sample has more variable?DBP is more than Vitamin D.Vitamin D is more than DBP.Both DBP and Vitamin D will equal variability.It cant be ascertained from information provided.  <response>: Ans. b Vitamin D is more than DBPRef: Parks Text book of Preventive and Social Medicine 24th Ed; Page No-886 Coefficient of variation CVMeanSD x100 Standard Deviation SD: It is denoted by the Greek word sigma. It gives us an idea of spread of dispersion. Standard deviation Variance Coefficient of variation for DBP11011 x10010 Coefficient of variation for vitamin D183 x10016 So Coefficient of variation for DBP Coefficient of variation for vitamin D 