
{{alias}}( [μ, σ] )
    Returns a normal distribution object.

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

    σ: number (optional)
        Standard deviation. Must be greater than `0`. Default: `1.0`.

    Returns
    -------
    normal: Object
        Distribution instance.

    normal.mu: number
        Mean parameter.

    normal.sigma: number
        Standard deviation. If set, the value must be greater than `0`.

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

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

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

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

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

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

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

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

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

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

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

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

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

    Examples
    --------
    > var normal = {{alias}}( -2.0, 3.0 );
    > normal.mu
    -2.0
    > normal.sigma
    3.0
    > normal.entropy
    ~2.518
    > normal.kurtosis
    0.0
    > normal.mean
    -2.0
    > normal.median
    -2.0
    > normal.mode
    -2.0
    > normal.skewness
    0.0
    > normal.stdev
    3.0
    > normal.variance
    9.0
    > normal.cdf( 0.8 )
    ~0.825
    > normal.logpdf( 2.0 )
    ~-2.9
    > normal.mgf( 0.2 )
    ~0.803
    > normal.pdf( 2.0 )
    ~0.055
    > normal.quantile( 0.9 )
    ~1.845

    See Also
    --------

