MAS-II study guide
MAS-II · Work through your exam, one topic at a time.
Exam MAS-II is one of the actuarial exams administered by the Casualty Actuarial Society (CAS) and sits on the ACAS credentialing pathway alongside Exams 1 and 2 and Exam MAS-I. The CAS describes itself as the trusted global authority advancing property and casualty actuarial science, with nearly 12,000 members worldwide, and it lists MAS-II among the exams candidates must clear before progressing to the fellowship-level Exams 7, 8, and 9. MAS-II is therefore aimed at candidates building toward Associate status who have already begun the sequence of preliminary exams and are ready for more advanced modeling and statistical material. Because the CAS publishes a Syllabus of Basic Education and maintains a Past Exams & Pass Marks archive, candidates should treat the official syllabus as the authoritative statement of what MAS-II covers and how it is weighted. Preparation typically means working systematically through the syllabus learning objectives, then practicing with released past exams under timed conditions and reviewing examiners' reports for recurring errors. Registration, scheduling, fees, and any discount programs are handled through the CAS Exams & Admissions pages, and the CAS also publishes accommodations information, a Candidate FAQ, and a Know Before You Go guide. Topics on this exam: Modern Actuarial Statistics II. The MAS-II study guide has 1 section and about 508 words.
01Modern Actuarial Statistics II: Credibility, Mixed Models, Bayesian Computation and Simulation
MAS-II is the second modern-statistics paper in the CAS sequence. It moves past "the data speaks for itself": you blend a risk's own experience with collateral data (credibility), model hierarchical and correlated data (linear mixed models), and quantify uncertainty by simulation or Bayesian computation (MCMC). The exam rewards structural reasoning - knowing which variance component drives a formula, not just plugging numbers. Limited fluctuation (classical): how much data is enough?
508 words, about 3 minMore study resources for MAS-II
- Practice questionsUnder the collective risk model, the aggregate claim amount S is the sum of a random number N of individual claim amounts X i.
- FlashcardsCompound variance formula. For aggregate loss S = sum of N i.i.d.
- Cheat sheetFor frequency-severity models, aggregate loss S = sum of N i.i.d.
- Key termsCredibility Theory. A set of statistical methods for updating a group rate with an individual insured's own experience, weighting each by how much data each contains.
- Study planMap the full MAS-II syllabus into a one-page topic inventory and rate your current confidence on each item from 1 to 5.
- Common mistakesSoftware prints a coefficient table regardless of the variance assumption, and candidates treat the printed SEs as final.
- Exam-day guideMAS-II administration details (remote-proctored vs.