Exam MAS-I Difficulty: Modern Actuarial Statistics I
Evaluating the difficulty of CAS Exam MAS-I and how it compares to other preliminary exams.
MAS-I Content and Challenge
CAS Exam MAS-I covers probability models, mathematical statistics, regression, time series analysis, and Bayesian methods. The exam is 4 hours with approximately 40 questions, testing both theoretical understanding and computational ability. MAS-I is generally considered more mathematically rigorous than the SOA's Exam SRM, with deeper coverage of the underlying statistical theory. Candidates need strong foundations in probability and mathematical statistics to succeed.
Difficulty Assessment
MAS-I pass rates have varied but generally fall in the 35% to 50% range. Study time averages 300 to 400 hours. The exam's difficulty stems from the breadth of statistical methods covered and the depth of understanding required. Bayesian statistics and time series analysis are topics that many candidates encounter for the first time during exam preparation. The CAS designed MAS-I to ensure that CAS candidates have strong quantitative foundations for the advanced actuarial work in later exams. Candidates with graduate-level statistics coursework have an advantage, but the exam is designed to be passable with dedicated self-study.