: Astronomía: statistical moment

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statistical moment

In mathematics, the moments of a function are quantitative measures related to the shape of the function's graph. If the function represents mass density, then the zeroth moment is the total mass, the first moment (normalized by total mass) is the center of mass, and the second moment is the moment of inertia. If the function is a probability distribution, then the first moment is the expected value, the second central moment is the variance, the third standardized moment is the skewness, and the fourth standardized moment is the kurtosis. The mathematical concept is closely related to the concept of moment in physics. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Moment_(mathematics))

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