This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
Median weight of 100 children was 16 kgs. The standard deviation was 8.calculate the percentage coefficient of variance. 
Select and explain. 
A. 50%, B. 35%, C. 45%, D. 55%
A: 50%
Answer: A: 50% 
Explanation: Coefficient of Variation (COV)


COV = SD × 100

Mean or Median
Is SD expressed as percentage of mean OR median.

CV = SD / MEAN × 100 = 8/16 × 100 = 50%