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What is the skewness of a normal distribution?
AIts skewness is zero
BIts skewness is one
CIts skewness is 0.5
DIts skewness is minus one
Answer & Solution
Correct answer: A. Its skewness is zero
1. A normal distribution is symmetric about its mean.
2. Deviations above and below the mean cancel once they are cubed and added.
3. The skewness of a normal distribution is therefore zero, and any symmetric data give a value near zero.
_Source: OpenStax Introductory Business Statistics (CC BY 4.0), Ch 2 "Descriptive Statistics", section 2.6 Skewness and the Mean, Median, and Mode_
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