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RANDOM VARIABLE ANE DISCRETE PROBABILITY DISTRIBUTION — Statistics STD 12 Commerce — Question

Gujarat BoardEnglish MediumSTD 12 CommerceStatisticsRANDOM VARIABLE ANE DISCRETE PROBABILITY DISTRIBUTION1 Mark
MCQ
For the probability distribution of a discrete random variable X, $E(X)=5$ and $E(X^{2})=35$ what will be the variance of this distribution ?
  • A
    40
  • B
    30
  • C
    20
  • ✓
    10
✓

Answer

Correct option: D.
10
D

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