MASS (version 7.3-45)

Insurance: Numbers of Car Insurance claims

Description

The data given in data frame Insurance consist of the numbers of policyholders of an insurance company who were exposed to risk, and the numbers of car insurance claims made by those policyholders in the third quarter of 1973.

Usage

Insurance

Arguments

Format

This data frame contains the following columns:
District
factor: district of residence of policyholder (1 to 4): 4 is major cities.
Group
an ordered factor: group of car with levels <1 litre,="" 1--1.5="" 1.5--2="">2 litre.
Age
an ordered factor: the age of the insured in 4 groups labelled <25, 25--29,="" 30--35,="">35.
Holders
numbers of policyholders.
Claims
numbers of claims

Source

L. A. Baxter, S. M. Coutts and G. A. F. Ross (1980) Applications of linear models in motor insurance. Proceedings of the 21st International Congress of Actuaries, Zurich pp. 11--29. M. Aitkin, D. Anderson, B. Francis and J. Hinde (1989) Statistical Modelling in GLIM. Oxford University Press.

References

Venables, W. N. and Ripley, B. D. (1999) Modern Applied Statistics with S-PLUS. Third Edition. Springer.

Examples

Run this code
## main-effects fit as Poisson GLM with offset
glm(Claims ~ District + Group + Age + offset(log(Holders)),
    data = Insurance, family = poisson)

# same via loglm
loglm(Claims ~ District + Group + Age + offset(log(Holders)),
      data = Insurance)

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