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Question

If mean of a series is 40 and variance 1486, then coefficient of variation is

A
0.9021
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B
0.9637
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C
0.8864
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D
0.9853
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Solution

The correct option is C 0.9637
If mean of the given dist. be ¯x and S.D be σ
then given ¯x=40,σ2=1486
Coefficient of variation =σ¯x=148640=.9637

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