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The common assumption is that zero-th central momentum is unit-value:
.
By definition the first central momentum is always zero:
.The second central momentum (μ2) is also called variance
LaTeX Math Inline |
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body | --uriencoded--\mu_2 = \sigma%5e2 |
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, where is standard deviation.The third central momentum is characterizing asymmetry of the dataset distribution
LaTeX Math Inline |
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body | --uriencoded--\mu_3 = \bar \mu_3 \cdot \sigma%5e3 |
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, where is skewness.
See also
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Formal science / Mathematics / Statistics / Statistical Metric Natural Science / System / Model