
{{alias}}( [μ, β] )
    Returns a Gumbel distribution object.

    Parameters
    ----------
    μ: number (optional)
        Location parameter. Default: `0.0`.

    β: number (optional)
        Scale parameter. Must be greater than `0`. Default: `1.0`.

    Returns
    -------
    gumbel: Object
        Distribution instance.

    gumbel.mu: number
        Location parameter.

    gumbel.beta: number
        Scale parameter. If set, the value must be greater than `0`.

    gumbel.entropy: number
        Read-only property which returns the differential entropy.

    gumbel.kurtosis: number
        Read-only property which returns the excess kurtosis.

    gumbel.mean: number
        Read-only property which returns the expected value.

    gumbel.median: number
        Read-only property which returns the median.

    gumbel.mode: number
        Read-only property which returns the mode.

    gumbel.skewness: number
        Read-only property which returns the skewness.

    gumbel.stdev: number
        Read-only property which returns the standard deviation.

    gumbel.variance: number
        Read-only property which returns the variance.

    gumbel.cdf: Function
        Evaluates the cumulative distribution function (CDF).

    gumbel.logcdf: Function
        Evaluates the natural logarithm of the cumulative distribution function
        (CDF).

    gumbel.logpdf: Function
        Evaluates the natural logarithm of the probability density function
        (PDF).

    gumbel.mgf: Function
        Evaluates the moment-generating function (MGF).

    gumbel.pdf: Function
        Evaluates the probability density function (PDF).

    gumbel.quantile: Function
        Evaluates the quantile function at probability `p`.

    Examples
    --------
    > var gumbel = {{alias}}( -2.0, 3.0 );
    > gumbel.mu
    -2.0
    > gumbel.beta
    3.0
    > gumbel.entropy
    ~2.676
    > gumbel.kurtosis
    2.4
    > gumbel.mean
    ~-0.268
    > gumbel.median
    ~-0.9
    > gumbel.mode
    -2.0
    > gumbel.skewness
    ~1.14
    > gumbel.stdev
    ~3.848
    > gumbel.variance
    ~14.804
    > gumbel.cdf( 0.8 )
    ~0.675
    > gumbel.logcdf( 0.8 )
    ~-0.393
    > gumbel.logpdf( 1.0 )
    ~-2.466
    > gumbel.mgf( 0.2 )
    ~1.487
    > gumbel.pdf( 1.0 )
    ~0.085
    > gumbel.quantile( 0.8 )
    ~2.5

    See Also
    --------

