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NTA Abhyas JEE Main2020MathematicsStatisticsPractice

The standard deviation of a distribution is 30. If each observation is increased by 5 , then the new standard deviation will be

Options

  1. A32
  2. B28
  3. C27
  4. DNone of these

Correct answer

D. None of these

Step-by-step solution

S.D. of a series is unaltered if each observation is increased (or reduced) by the same scalar quantity, S.D. is independent of change of origin. Hence, S.D. will be the same. ∴ S.D. = 30

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