For +ve and -ve skewed, check the sign of _______?
Correct answer: D. µ3
- A. β1
- B. µ2
- C. β2
- D. µ3
Explanation
The third central moment, μ3, carries the direction of skewness: it is positive for right skewness and negative for left skewness. β1 is based on a squared third moment and therefore cannot itself indicate the sign.
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