kurtosisExcess property

@override double get kurtosisExcess

Returns the excess kurtosis.

See https://en.wikipedia.org/wiki/Kurtosis#Excess_kurtosis.

Implementation

@override
double get kurtosisExcess =>
    exp(4 * sigma * sigma) +
    2 * exp(3 * sigma * sigma) +
    3 * exp(2 * sigma * sigma) -
    6;