A tutorial on UNFIT: An interactive computer package for fitting probability distributions to observed data

In this paper we present a tutorial on using the UNIFIT software package to fit probability distributions to observed data. In the first section we provide an example which demonstrates why selecting appropriate probability distributions is of particular interest to simulation analysts. A general overview of the UNIFIT software is presented in the second section. We then present a three-activity approach to fitting distributions to data and highlight the capabilities of UNIFIT which allow the analyst to perform these activities in a thorough and timely manner. The fourth section provides a discussion of additional features of the software. A number of graphical displays which are available in UNIFIT are included in the last section of the paper.