is denoted by continuous probability distribution Pareto type-II probability distribution Alejandra Gonzalez-Beltran Lomax distribution Orlaith Burke Philippe Rocca-Serra http://www.inside-r.org/packages/cran/actuar/docs/Pareto dpareto(x, shape, scale, log = FALSE) https://en.wikipedia.org/wiki/Lomax_distribution the Pareto type-II probability distribution is a continuous probability distribution which is defined by a probability density function characterized by 2 parameters, alpha and lambda, 2 real, strictly positive numbers. alpha is known as the shape parameter while lambda is known as the scale parameter. the function defines the probably of a continous random variable according to the following: p(x) = {\alpha \over \lambda} \left[{1+ {x \over \lambda}}\right]^{-(\alpha+1)}, \qquad x \geq 0, probability distribution scale parameter ready for release