UPSC NDA Math Model Paper 8

Given: For some observations we have mean is12.5 and standard deviation is 6.5
Here, we have to find the coefficient of variation for the same observations.
As we know, Coefficient of variation =

standard deviaiton

Mean

×100
⇒ Coefficient of variation =

6.5

12.5

×100=52%
Hence, option A is the correct answer.