A factor used to adjust a base figure to an ultimate one. For example (01) The ratio between the ultimate cost and the accumulated payments at a prior development period, as used in statistical claims projection methods, such as the chain ladder method. (02) The scaling-up of claims experience to allow for the expectation of the occasional very large claim. This is used in experience rating of individual claims experience that has been stripped of any very large claims. It is also sometimes used in motor rating to make adequate allowance for large bodily injury liability claims, stripped out of a basic analysis.