If E(X)=3 and E(X²)=13, variance equals:
If E(X)=3 and E(X²)=13, variance equals:
- A. 4
- B. 10
- C. 13
- D. 9
Answer: A) 4
Explanation: 13−9=4.
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If E(X)=3 and E(X²)=13, variance equals:
Answer: A) 4
Explanation: 13−9=4.
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