Mean (M) and Standard Deviation (S) of different datasets are given in A-D below. Compute the coefficient of variation of each dataset and arrange in ascending order.

1.M = 60, S = 14

2.M = 70, S = 16

3.M = 80, S = 5

4.M = 90, S = 4

A4, 2, 3, 1

B1, 3, 2, 4

C3, 1, 4, 2

D4, 3, 2, 1 ✓ Correct

Correct answer: (D) 4, 3, 2, 1

Explanation

The ascending order is 4, 3, 2, 1.

Coefficient of variation = S/M x 100.

14/60 = 23.3%, 16/70 = 22.9%.

5/80 = 6.25%, 4/90 = 4.44%.

Smallest to largest gives datasets 4, 3, 2, 1.

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