MAS-II study materials
MAS-II study resources

MAS-II study plan

MAS-II · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Modern Actuarial Statistics II

  • Map the full MAS-II syllabus into a one-page topic inventory and rate your current confidence on each item from 1 to 5

  • Derive the likelihood, score, and observed/expected Fisher information for exponential-family models from first principles, working three examples by hand

  • Set up a spaced-repetition deck covering core distributions (Poisson, binomial, gamma, normal, inverse Gaussian) with mean, variance, and canonical link noted

  • Build a formula sheet template in a spreadsheet with columns for model, assumption, estimator, and asymptotic variance

Your checkpoint

A one-page syllabus inventory plus a 15-row formula sheet, both saved and dated

Week 2

Modern Actuarial Statistics II

  • Derive maximum likelihood estimators for frequency and severity models and verify each with a simulated dataset in R or Python

  • Distinguish maximum likelihood, method of moments, and Bayesian estimation and state when each fails or is preferred

  • Compute standard errors from the Hessian and from the inverse Fisher information, then compare the two numerically on one simulated sample

  • Write out the Cramer-Rao lower bound argument and identify where regularity conditions matter

Your checkpoint

A script that simulates one dataset, fits three estimators, and prints a table comparing estimates and standard errors

Week 3

Modern Actuarial Statistics II

  • State the asymptotic normality result for MLEs and apply the delta method to transform a parameter estimate and its variance

  • Derive confidence intervals and Wald, score, and likelihood-ratio test statistics for a single parameter and a vector of parameters

  • Run a likelihood-ratio test on nested models and interpret the chi-square reference distribution

  • Tabulate the three test statistics side by side with their formulas and small-sample caveats

Your checkpoint

A worked hypothesis-testing write-up on one dataset showing all three test statistics and a conclusion

Week 4

Modern Actuarial Statistics II

  • Derive the profile likelihood and construct a profile-likelihood confidence interval for one parameter of interest

  • Explain the construction of bootstrap confidence intervals (percentile and basic) and implement one by resampling

  • Compare profile-likelihood and bootstrap intervals on the same dataset and explain any disagreement

  • Review weeks 1-3 notes and rewrite every derivation from memory

Your checkpoint

A comparison table of Wald, profile-likelihood, and bootstrap intervals for one parameter, with a short interpretation

Week 5

Modern Actuarial Statistics II

  • Specify a generalized linear model with a non-canonical link and derive the score and information equations

  • Fit a log-link Poisson frequency model and a log-link gamma severity model, then interpret every coefficient on the response scale

  • Diagnose overdispersion and zero-inflation and state the corrective modeling options

  • Derive the deviance and compare it with the Pearson chi-square statistic

Your checkpoint

A fitted GLM report with coefficient table, deviance, and a written interpretation of each effect

Week 6

Modern Actuarial Statistics II

  • Derive the credibility premium under the Bühlmann and Bühlmann-Straub frameworks and connect it to the linear mixed model formulation

  • Compute the credibility factor and structural parameters from a small multi-group dataset by hand

  • Explain how Bayesian conjugate updating yields the same credibility formula and identify the prior-to-structural-parameter correspondence

  • Set up the hierarchical likelihood for a random-effects model and state what the random effect represents

Your checkpoint

A hand-worked credibility calculation for at least four groups, reconciled against a software fit

Week 7

Modern Actuarial Statistics II

  • Derive the empirical Bayes estimator and distinguish it from the fully Bayesian and pure random-effects estimators

  • Explain shrinkage, and plot how the credibility weight changes as between-group variance and within-group variance vary

  • Fit a random-effects frequency model and extract the predicted group effects

  • Identify the assumptions that break the credibility framework and describe a diagnostic for each

Your checkpoint

A shrinkage plot with a written explanation of how the credibility weight responds to variance components

Week 8

Modern Actuarial Statistics II

  • Assemble a single condensed review sheet covering every derivation from weeks 1-7

  • Timed practice: complete a set of mixed estimation and inference problems under exam time pressure and score yourself

  • Re-derive from memory the three items you scored lowest on and log the corrections

  • Write a final self-assessment listing weak topics with a specific remediation action for each

Your checkpoint

A scored timed practice set with an error log and a prioritized remediation list

Milestones

Week 2: Can derive MLEs and Fisher information for at least three model families without notes, and explain the difference between observed and expected information

Week 4: Can construct Wald, score, likelihood-ratio, profile-likelihood, and bootstrap intervals for one parameter and justify which to prefer in a small sample

Week 6: Can derive the Bühlmann-Straub credibility premium from the model assumptions and reconcile a hand calculation with software output

Week 8: Scores at or above your target on the timed mixed practice set and has a written remediation plan for every missed topic