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Railways PYQCBT 1 2020

RRB NTPC · Question 22

If mean is 40 and standard deviation is 5 then C.V (Coefficient of variation) is:

  1. 20%

  2. 12.5%

  3. 100%

  4. 5%

Show answer & explanation

Answer: (B) 12.5%

Explanation

Coefficient of variation = SD/mean × 100 = 5/40 × 100 = 12.5%.