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