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The arithmetic means of two distributions are 10 and 15 and their S.D. are 2 and 2.5 respectively. Find their coefficient of variation.

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For the 1st distribution `barx_(1)=10, sigma_(1)=2`
`:. C.V.=(sigma_(1))/(barx_(1))xx100=2/10xx100=20`.
For 2nd distribution `barx_(2)=15, sigma_(2)=2.5`
`:. C.V. =(sigma_(2))/(barx_(2))xx100=2.5/15xx100=16.67`

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