Arithmetic mean and variance of a series reported to be 200 and 256 respectively, given these values which of the following are correct ? (σ = Standard deviation, cv = Coefficient of Variation)
I. σ = 65536
II. cv = 32768
III. σ = 16
IV. cv = 8
Codes :
1
I only
2
I and II only
3
III only
4
III and IV only