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AP EAMCET202317 May 2023Morning ShiftMathematicsStatisticsActual

If each of the observations x₁, x₂, , x_n is increased or decreased by k , where k is a positive number, then the variance of the da

Options

  1. Aincreases by k
  2. Bdo not change
  3. Cis equal to k ^2
  4. Dis equal to 2 k

Correct answer

B. do not change

Step-by-step solution

If each of the observations x₁, x₂, x_n is increased or decreased by k then mean and variance of the obtained data remains unchanged.

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