Exam CS2

The CS2 exam format

Two online papers in the same session: a theory paper in Word and a paper answered in R, combined 70:30.

Paper A3 hours 20 minutes, a theory paper answered in Word
Paper B1 hour 50 minutes, questions answered in R, results presented in Word
Final mark70% Paper A and 30% Paper B, both sat in the same session, with one pass mark

What each paper asks

  • Paper A: questions of varying marks with full working, including short explanations and comments.
  • Paper B: questions of varying marks answered with R on data sets given with the paper, with the results and comments presented in Word.
  • About 5% of marks test knowledge, 75% application and 20% higher-order skills.

R for Paper B

You need R and RStudio installed and working before the exam. Every Paper B question in this course comes with its own data set to download and the R code and output for its solution.

Try a question

Pareto claims under excess of loss

Paper A style · Losses and reinsurance · Straightforward · 8 marks

Individual claim amounts on a household contents portfolio follow a Pareto distribution with parameters α=4\alpha=4 and λ=2,400\lambda=2{,}400, so that F(x)=1−(24002400+x)4F(x)=1-\left(\frac{2400}{2400+x}\right)^{4} for  . The insurer has an individual excess of loss reinsurance treaty with retention £2,000.

  1. (i)

    Calculate the probability that a claim involves the reinsurer, to 4 significant figures.

    1 mark
  2. (ii)

    Calculate the insurer's expected payment per claim, to the nearest penny.

    3 marks
  3. (iii)

    Calculate the reinsurer's expected payment on a claim that involves the reinsurer, to the nearest penny.

    2 marks
  4. (iv)

    Hence calculate the reinsurer's expected payment per claim (including claims that do not involve it), to the nearest penny, and check your answers against the mean claim amount.

    2 marks

Next step

The CS2 subject page

Questions people ask

Do I have to pass both papers separately?

No. The two marks are combined, 70% Paper A and 30% Paper B, and the combined mark must reach the pass mark. You sit both papers in the same session.

Can non-members sit CS2?

No. Non-members may book only CM1 and CS1; CS2 needs membership of the exam body.

Which software does Paper B use?

R, with your answers presented in Word. Have R and RStudio set up and practised before the day.