CAS Exam MAS-II exam at a glance
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CAS Exam MAS-II key facts & eligibility
| Conducting body | Casualty Actuarial Society (CAS) |
|---|---|
| Official website | casact.org ↗ |
| Mode | CAS Exam MAS-II (Modern Actuarial Statistics II) — one of the CAS basic-education exams on the path to the ACAS (Associate) and ultimately FCAS (Fellow) designations for casualty/property actuaries. It is a computer-based exam delivered at Pearson VUE. |
| Frequency | Offered in scheduled CAS exam sittings each year. |
| Scoring & marking | The exam is computer-based with about 45 questions in 4 hours (multiple-choice plus multiple-select, point-and-click, fill-in-the-blank and matching items). It covers credibility theory (classical, Bühlmann/Bühlmann-Straub and Bayesian), linear mixed models, statistical/predictive learning methods and time series. |
| Score validity | A passed exam is permanent credit toward the ACAS and FCAS designations. |
| Language | English. |
Who is eligible for CAS Exam MAS-II?
No formal degree requirement, but candidates are expected to have mastered Exam MAS-I and to know calculus, probability and linear algebra.
Last verified July 2026 against CAS — Exam MAS-II. Always confirm current details on the official website before you register.
CAS Exam MAS-II section breakdown
The CAS Exam MAS-II mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. No inter-section breaks — the timer runs continuously.
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CAS Exam MAS-II (50 Q)
Marking scheme
+1 per correct. Try your score.
Strategy: CAS Exam MAS-II has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.
Scale: CAS Exam MAS-II (pass 700/1000).
How CAS Exam MAS-II is conducted
- Mode
- Test format
- Backtracking
- Mark for review
CAS Exam MAS-II time strategy
With 50 questions in 240 minutes, you have about 288 seconds per question on average. Successful candidates aim for the following pacing on each section:
- CAS Exam MAS-II (50 Q)
Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.
CAS Exam MAS-II topics covered
Across the 50 Wrexa Edge variants of CAS Exam MAS-II, the following topics appear most often (sample distribution from one variant):
CAS Exam MAS-II (50 Q)
- CAS MAS-II — Statistical learning · 17
- CAS MAS-II — Time series · 13
- CAS MAS-II — Bühlmann credibility · 7
- CAS MAS-II — Bayesian credibility · 4
- CAS MAS-II — Linear mixed models · 4
- CAS MAS-II — Limited fluctuation credibility · 3
- CAS MAS-II — GLMs · 2
CAS Exam MAS-II difficulty calibration
Elite tier. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months.
CAS MAS-II · ~45 Q in 4h. Credibility, linear mixed models, Bayesian analysis & MCMC, time series, and advanced GLM/statistical learning. · Official language: English.
Verified content — Wrexa Edge's CAS Exam MAS-II bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).
How Wrexa Edge prepares you for CAS Exam MAS-II
- Real test-day interface
- 50 distinct variants
- Detailed analytics
- Spaced repetition (Notebook)
- Optional proctoring
- Free to start
Expert take: what CAS Exam MAS-II really tests
CAS Exam MAS-II (Modern Actuarial Statistics II), from the Casualty Actuarial Society, is a basic-education exam on the path to the ACAS and FCAS designations. It is computer-based with about 45 questions in 4 hours and covers credibility theory (classical, Bühlmann/Bühlmann-Straub and Bayesian), linear mixed models, statistical/predictive-learning methods and time series. Candidates are expected to have mastered Exam MAS-I first.
Preparation tips
- Master MAS-I and the required mathematics before sitting MAS-II.
- Focus on statistical learning and credibility — the heaviest topics.
- Practise the varied item types under 4-hour timing.
Common mistakes to avoid
- Expecting GLMs to dominate — those are chiefly a MAS-I topic.
- Underestimating the statistical-learning content.
CAS Exam MAS-II study plan
A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.
- Exam MAS-I content
- Calculus, probability and linear algebra
- ~45 questions in 4 hours, computer-based
- Credibility — Bühlmann/Bühlmann-Straub and Bayesian
- Linear mixed models
- Statistical learning and time series
- Full MAS-II practice under 4-hour timing
- Work the varied item types
- Review weak topics
Where CAS Exam MAS-II can take you
A strong CAS Exam MAS-II result opens up these careers and higher-study paths:
- Toward ACAS / FCAS
- Casualty actuary
Best books & official prep for CAS Exam MAS-II
- MAS-II syllabus readings & study manuals — CAS / Various
- MAS-II practice exams — Various
Official practice: Study to the official CAS MAS-II syllabus on casact.org; ensure you have mastered MAS-I and the required mathematics first.
Previous-year papers: CAS publishes the content outline and past exam materials.
Sample CAS Exam MAS-II practice questions
5 questions taken from the CAS Exam MAS-II mock tests on Wrexa Edge. Try each one, then reveal the answer.
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Q1. Why should predictors usually be standardised before ridge or lasso regression?
- Standardisation is needed to make the response normally distributed
- Unstandardised predictors make the least-squares fit impossible
- Standardisation removes all multicollinearity among the predictors
- The penalty depends on coefficient scale, so units would distort it
Show answer
Answer: D — The penalty depends on coefficient scale, so units would distort it
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Q2. The Bühlmann credibility premium can be characterised as:
- The best linear approximation (least squares) to the Bayesian premium
- The exact Bayesian premium for any prior and model
- The maximum likelihood estimate of the risk's own mean
- The posterior mode of the hypothetical mean distribution
Show answer
Answer: A — The best linear approximation (least squares) to the Bayesian premium
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Q3. A random forest on 16 predictors typically considers about how many predictors at each split (classification, m ≈ √p)?
- 16
- 4
- 8
- 2
Show answer
Answer: B — 4
-
Q4. An augmented Dickey–Fuller test is used to test for:
- Heteroscedastic residuals
- Seasonality at lag 12
- A unit root (nonstationarity)
- Normality of the errors
Show answer
Answer: C — A unit root (nonstationarity)
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Q5. With a frequency standard of 1,082.41 claims and severity coefficient of variation 2, the full credibility standard for aggregate losses (Poisson frequency) is about:
- 4,330 claims
- 2,165 claims
- 1,082 claims
- 5,412 claims
Show answer
Answer: D — 5,412 claims
Frequently asked questions
- What is the CAS Exam MAS-II exam pattern?
- Casualty Actuarial Society — Exam MAS-II (Modern Actuarial Statistics II) contains 50 questions across 1 section: CAS Exam MAS-II (50 Q). Total duration is 240 minutes (about 288 seconds per question).
- Does CAS Exam MAS-II have negative marking?
- No — CAS Exam MAS-II has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
- How is CAS Exam MAS-II scored?
- Scaled score range: 100 to 1000. CAS Exam MAS-II (pass 700/1000).
- How can I practise CAS Exam MAS-II online for free?
- Wrexa Edge gives you a free full-length CAS Exam MAS-II mock test — with instant scoring, detailed explanations and analytics — plus 49 more with a one-time $1.99 unlock that never expires. Start practising in under a minute, no card required.
- What is the difficulty level of CAS Exam MAS-II?
- CAS Exam MAS-II is rated Elite difficulty on Wrexa Edge. Elite-tier: among the toughest exams in its category. Most successful candidates prepare for 6-12+ months. CAS MAS-II · ~45 Q in 4h. Credibility, linear mixed models, Bayesian analysis & MCMC, time series, and advanced GLM/statistical learning. · Official language: English.
- How long is the CAS Exam MAS-II exam?
- CAS Exam MAS-II runs for 240 minutes total. On Wrexa Edge the timer is enforced exactly as on the real exam — including no inter-section breaks.
- What topics are covered in CAS Exam MAS-II?
- CAS Exam MAS-II is split into: CAS Exam MAS-II (50 Q). Each section is timed and weighted separately. CAS MAS-II · ~45 Q in 4h. Credibility, linear mixed models, Bayesian analysis & MCMC, time series, and advanced GLM/statistical learning. · Official language: English.
- What tools or aids are allowed during CAS Exam MAS-II?
- No special tools are required. Note: real exam is proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow you can enable.
- Is the CAS Exam MAS-II test adaptive?
- No — CAS Exam MAS-II is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
- How many CAS Exam MAS-II mock tests does Wrexa Edge offer?
- Wrexa Edge generates 50 distinct CAS Exam MAS-II variants — each with different question content, not just shuffled options — the first one free for everyone and 49 more with a one-time $1.99 unlock. That's 2500 unique practice questions in the real test-day interface.
- Is there a free CAS Exam MAS-II test series 2026?
- Yes. The Wrexa Edge CAS Exam MAS-II test series for 2026 gives you a free full-length mock test (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.
- Are CAS Exam MAS-II previous year question–style papers included?
- Every CAS Exam MAS-II mock is modelled on the official exam pattern and the style of previous years' papers — the same 50-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
- Which is the best free CAS Exam MAS-II mock test online?
- Wrexa Edge's CAS Exam MAS-II mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.
- Can I take the CAS Exam MAS-II mock test on mobile?
- Yes. CAS Exam MAS-II mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.
- What is the CAS Exam MAS-II syllabus?
- The CAS Exam MAS-II syllabus maps to its 1 section: CAS Exam MAS-II (50 Q). Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.
- What is the eligibility for CAS Exam MAS-II?
- No formal degree requirement, but candidates are expected to have mastered Exam MAS-I and to know calculus, probability and linear algebra. Wrexa Edge focuses on realistic CAS Exam MAS-II practice: a free full-length mock in the exact exam pattern, ready whenever you are.
- When is the CAS Exam MAS-II exam and how should I prepare?
- Official CAS Exam MAS-II exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you a free CAS Exam MAS-II mock with instant scoring so you can track your readiness week by week.
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