A Mixed Model for Loss Ratio Analysis

M. Y. El-Bassiouni

ASTIN Bulletin, 1991, vol. 21, issue 2, 231-238

Abstract: The model introduced may be treated as a mixed two-way analysis of variance with fixed company effects and random time effects. Further, the risk volumes are integrated into the model in such a way that the unexplained variance is inversely proportional to the risk volume of each company. The proposed model is used to analyze loss ratio data from the general insurance market in Kuwait. The maximum likelihood estimates of the structural parameters are obtained. These estimates are then used to compute the loss ratios and solvency margins for the four domestic insurance companies.

Date: 1991
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