MCQ
The probability distribution of a random variable X is given below.

X = k 0 1 2 3 4
P(X = k) 0.1 0.4 0.3 0.2 0

The variance of X is ______

  • A
    1.6
  • 0.84
  • C
    0.24
  • D
    0.75

Answer

Correct option: B.
0.84
B

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