Q208 / 270 · NDA 2014 (Phase 2) · Mathematics

The variance of 20 observations is 5 . If each observation is multiplied by 2 , then what is the new variance of the resulting observations?

  • A
    5
  • B
    10
  • Correct answer
    C
    20
  • D
    40

Solution

The correct answer is option (C)

Hence, the correct answer is option: 'C'.

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