In normal distribution u2 = S2 and u4 =___________?
Correct answer: C. 3S4
- A. 3S2
- B. 3S
- C. 3S4
- D. 4S2/x
Explanation
For a normal distribution, the second central moment is σ² and the fourth central moment is 3σ⁴. Hence μ₄ = 3S⁴ when S denotes the standard deviation.
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