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MHT CET20226 Aug 2022Evening ShiftMathematicsStatisticsActual

The variance and mean of 15 observations are respectively 6 and 10 . If each observation is increase by 8 then the new variance and new mean of resulting observations are respectively

Options

  1. A14,10
  2. B14,18
  3. C6,18
  4. D6,10

Correct answer

C. 6,18

Step-by-step solution

The new mean will be increased by 8 i.e., new mean becomes 10+8=18 But, new variance will remain unchanged Hence, new variance =6

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