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IFoA_CAA_M0 Exam - Topic 2 Question 98 Discussion

For random variable X, use the following statistics to calculate its coefficient of skewness based on central moments.E(X) = 3.940E(X2) = 21.466skew(X) = E[(X - )3] = 6.008
C) 0.415
A) -0.415
B) 0.060
D) 0.768

IFoA_CAA_M0 Exam - Topic 2 Question 98 Discussion

Actual exam question for IFoA's IFoA_CAA_M0 exam
Question #: 98
Topic #: 2
[All IFoA_CAA_M0 Questions]

For random variable X, use the following statistics to calculate its coefficient of skewness based on central moments.

E(X) = 3.940

E(X2) = 21.466

skew(X) = E[(X - )3] = 6.008

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Suggested Answer: C

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Wait, how can it be positive? That seems off.
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Malcom
5 days ago
I think it’s definitely option C, 0.415.
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Anglea
10 days ago
The skewness is calculated using central moments, right?
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Jacqueline
15 days ago
I feel like I might be leaning towards option C, but I really need to double-check my calculations before committing to an answer.
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Brinda
2 months ago
I think I need to use the third central moment in the calculation, but I'm a bit confused about how to find it from the given statistics.
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Melissa
2 months ago
This question seems similar to the practice problems we did last week, but I can't recall the exact formula for the coefficient of skewness.
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Devon
2 months ago
I remember we discussed skewness in class, but I'm not entirely sure how to apply the central moments here.
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