Given the risk characteristics and the observed claim cost for the experience period, this book describes some ways in which statistical methods can be used in the calculation of net premiums for individual groups having non-identical risk characteristics and credibility generally less than one.

The applications result in unique credibility formulas that take into account the individual characteristics, and are expected to provide adequate, equitable, and competitive premiums. The underlying methods are designed to be consistent with current actuarial practice, though giving attention to occasional need for suitable modifications.

Since stop loss claim costs are a function of the behavior of the tails of their respective distributions, this part of the book assesses such claim cost using well established parametric models, and provides comprehensive tables of the corresponding stop loss premiums.