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.
A. M = 60, S = 14
B. M = 70, S = 16
C. M = 80, S = 5
D. M = 90, S = 4
Choose the correct answer from the options given below:नीचे A-D में विभिन्न आँकड़ा-समूहों के माध्य (M) तथा मानक विचलन (S) दिए गए हैं। प्रत्येक आँकड़ा-समूह का विचरण गुणांक (coefficient of variation) ज्ञात कीजिए तथा आरोही क्रम में व्यवस्थित कीजिए।
A. M = 60, S = 14
B. M = 70, S = 16
C. M = 80, S = 5
D. M = 90, S = 4
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:

1. AD, B, C, A
2. BA, C, B, D
3. CC, A, D, B
4. DD, C, B, A

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: D. D, C, B, A

Explanation

Coefficient of variation = (S ÷ M) × 100. A = 14/60 × 100 ≈ 23.33%, B = 16/70 × 100 ≈ 22.86%, C = 5/80 × 100 = 6.25%, D = 4/90 × 100 ≈ 4.44%. Ascending order is 4.44 D, C, B, A.विचरण गुणांक = (S ÷ M) × 100। A = 14/60 × 100 ≈ 23.33%, B = 16/70 × 100 ≈ 22.86%, C = 5/80 × 100 = 6.25%, D = 4/90 × 100 ≈ 4.44%। आरोही क्रम 4.44 D, C, B, A।