Description: Presented at June 2002 Spring Meeting. This session discusses how credibility varies by size of groups for various health coverages, when a block of business can be considered fully credible, how credibility can factor into a rate filling, and to what extent current experience can be considered more credible than past experience.

Description: Presents credibility formulas that are designed to be specifically applicable to group insurance, and which are based on group size and are adjustable for changes in group membership, etc. The practical motivation and use of these formulas are discussed.