Actuarial Notes

CAS Exam 5 Fall 2014, Question 11

Study guide: Exam 5

Given the following information for a homeowners book of business:

Territory Earned Exposures Earned Premium ($000) Ultimate Losses Excluding Catastrophes ($000) Current Relativity
1 2,500 3,375 3,200 1.150
2 7,000 11,200 6,200 1.000
3 500 700 1,000 0.900
  • Ratio of ALAE to loss = 4%.
  • Full credibility standard for exposures = 5,000.
  • Use square root rule for credibility calculations.
  • Territory 2 is the base class.
  • The rating algorithm is Base Rate × Territory Factor × Amount of Insurance Factor.

Part a (2 points)

Calculate the credibility-weighted indicated non-catastrophe relativity to the base for each territory using the pure premium method.

Part b (0.5 points)

Territory 1 has a high percentage of low-value homes relative to territories 2 and 3. Describe a possible distortion to the indicated territory 1 relativity resulting from the distribution of home values.

Part c (0.5 points)

Assume that $1,000,000 of the loss in territory 2 came from a single loss. Discuss an appropriate adjustment to the analysis.

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Concepts tested

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