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Find the coefficient of variation of the heights of the students in a classroom having mean 162 cm and the standard deviation is 36 cm.
1. 4.5
2. 22.22
3. 9
4. 8.181

1 Answer

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Correct Answer - Option 2 : 22.22

Concept:

The coefficient of variation (C.V.) = \(\rm {\text{Standard Deviation}\over Mean}\times100\)

Calculation:

Mean = 162 cm, standard deviation = 36 cm 

Coefficient of variation = \(\rm {36\over 162}\times100\)

C.V. = \(200\over9\) = 22.22

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