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MHT CET202410 May 2024Morning ShiftMathematicsStatisticsActual

Mean and variance of six observations are 6 and 12 respectively. If each observation is multiplied by 3 , then new variance of the resulting observations is

Options

  1. A288
  2. B36
  3. C18
  4. D108

Correct answer

D. 108

Step-by-step solution

When each item of a data is multiplied by , Variance is multiplied by ^2 . aligned New variance & =3^2 12 & =9 12 & =108 aligned

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