Question

The mean ana coefficient of variation of a data are 12 and 25 %respectively, the value of the standard deviation is

Answer 1

Answer:

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Step-by-step explanation:

now here coefficient of variation=25%

also mean=12

so to find standard deviation S.D of above data

we would be using

coefficient of variation=standard devation×100/mean

so substitute given values in above formula

we get

25=S.D×100/12

so 1=S.D×4/12

ie S.D/3=1

So S.D=3

thus value of standard deviation is 3