
469Rating Factor Selection and Generalised Linear Modelling
Client PrivateMaleYoung Comp AvgDirPremiumMktShare RI premium
Insurer 1 33.5% 81.5% 6.3% 68.4% 198.9 0.9% 1.
Insurer 2 72.0% 70.9% 28.0% 55.2% 521.9 1.0% 6.
Insurer 3 29.4% 89.2% 0.2% 72.2% 676.2 1.3% 6.
Insurer 4 58.9% 74.2% 3.4% 64.8% 362.7 1.8% 2.
Insurer 5 47.5% 72.1% 18.1% 47.4% 423.4 2.3% 4.
FIGURE 26.14
Reinsurance premium xs £5M and possible rating factors for different insurance companies. Figures are based
on real data but are scrambled and randomised beyond recognition.
e Forward Selection Method
Y ~ 1
Y ~ %Young
Y ~ %Male Y ~ AvgDirPremium
Y ~ %Comp
Y ~ . . .
Y ~ . . ...