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Railways PYQCBT 1 2016

RRB NTPC · Question 25

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

  1. 10%

  2. 20%

  3. 40%

  4. 60%

Show answer & explanation

Answer: (B) 20%

Explanation

Coefficient of variation = (standard deviation / mean) × 100 = 4/20 × 100 = 20%.