Class Skewness

  • All Implemented Interfaces:, StorelessUnivariateStatistic, UnivariateStatistic

    public class Skewness
    extends AbstractStorelessUnivariateStatistic
    Computes the skewness of the available values.

    We use the following (unbiased) formula to define skewness:

    skewness = [n / (n -1) (n - 2)] sum[(x_i - mean)^3] / std^3

    where n is the number of values, mean is the Mean and std is the StandardDeviation

    Note that this implementation is not synchronized. If multiple threads access an instance of this class concurrently, and at least one of the threads invokes the increment() or clear() method, it must be synchronized externally.

    See Also:
    Serialized Form