Question: Find the variance of a random variable X? if X = 9, 11, 12, 13, 14, and P(X) = 0.2, 0.25, 0.3, 0.15, 0.1 respectively

Find the variance of a random variable X? if X = 9, 11, 12, 13, 14, and P(X) = 0.2, 0.25, 0.3, 0.15, 0.1 respectively

  1. 2.35
  2. 1.35
  3. 3.35
  4. 4.35

Find the variance of a random variable X? if X = 7, 9, 10, 11, 12, and P(X) = 0.2, 0.25, 0.3, 0.15, 0.1 respectively

  1. 3.35
  2. 4.35
  3. 1.35
  4. 2.35

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