A Lognormal Model for Insurance Claims Data
DOI:
https://doi.org/10.57805/revstat.v4i2.31Keywords:
lognormal distribution, maximum-likelihood estimation, number of claims, total amount of claimsAbstract
In the insurance area, especially based on observations of the number of claims, N(w), corresponding to an exposure w, and on observations of the total amount of claims incurred, Y (w), the risk theory arises to quantify risks and to fit models of pricing and insurance company ruin. However, the main problem is the complexity to obtain the distribution function of Y (w) and, consequently, the likelihood function used to calculate the estimation of the parameters.
This work considers the Poisson(wλ), λ>0, for N(w) and lognormal(µ, σ2 ), −∞<µ 0, for Zi , the individual claims, and presents maximum-likelihood estimates for λ, µ and σ2 .
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2006 REVSTAT-Statistical Journal
This work is licensed under a Creative Commons Attribution 4.0 International License.