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MHT CET202310 May 2023Evening ShiftMathematicsStatisticsActual

Mean and variance of six observations are 8 and 16 respectively. If each observation is multiplied by 3 , then new variance of the resulting observations is

Options

  1. A16
  2. B48
  3. C24
  4. D144

Correct answer

D. 144

Step-by-step solution

When each item of a data is multiplied by , variance is multiplied by ^2 . aligned New variance & =3^2 16 & =9 16 & =144 aligned

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