CAS Research & Industry Advancements 2 ā Questions and Answers
Question 1: Which CAS research initiative specifically focuses on advancing predictive modeling techniques for workers' compensation reserving?
- The Actuarial Research Conference
- The CAS Research Working Party on Predictive Modeling (Correct answer)
- The Casualty Loss Reserve Seminar
- The CAS Ratemaking, Product and Modeling Seminar
Correct answer: The CAS Research Working Party on Predictive Modeling
The CAS Research Working Party on Predictive Modeling specifically advances techniques applicable to reserving in lines like workers' compensation.
Question 2: Telematics data in auto insurance primarily improves ratemaking accuracy by providing what type of information?
- Driver demographic profiles
- Real-time behavioral driving data (Correct answer)
- Vehicle manufacturer safety ratings
- Historical accident claim records
Correct answer: Real-time behavioral driving data
Telematics captures real-time driving behaviorāspeed, braking, mileageāenabling usage-based insurance pricing more accurate than demographic proxies.
Question 3: In the context of CAS research, what does 'predictive accuracy' differ from 'goodness-of-fit' in model evaluation?
- Predictive accuracy measures in-sample fit; goodness-of-fit measures out-of-sample performance
- Predictive accuracy measures out-of-sample performance; goodness-of-fit measures in-sample fit (Correct answer)
- They are equivalent metrics used interchangeably
- Predictive accuracy applies only to frequency models; goodness-of-fit only to severity models
Correct answer: Predictive accuracy measures out-of-sample performance; goodness-of-fit measures in-sample fit
Goodness-of-fit assesses how well a model matches the training data, while predictive accuracy evaluates performance on holdout or future data.
Question 4: Which emerging risk category has prompted the CAS to develop new frameworks for quantifying long-tail liabilities with significant model uncertainty?
- Cyber risk (Correct answer)
- Earthquake risk
- Marine cargo risk
- Standard fire risk
Correct answer: Cyber risk
Cyber risk presents long-tail, highly correlated exposures with limited historical data, driving CAS research into new quantification frameworks.
Question 5: The CAS publication 'Variance: Advancing the Science of Risk' serves what primary purpose for the actuarial community?
- It is a practitioner newsletter summarizing regulatory changes
- It is a peer-reviewed journal publishing casualty actuarial research (Correct answer)
- It is a study guide for CAS exam candidates
- It is an annual industry loss data compilation
Correct answer: It is a peer-reviewed journal publishing casualty actuarial research
Variance is the CAS peer-reviewed research journal that publishes original actuarial science research in casualty and property lines.
Question 6: When applying gradient boosting machines (GBM) to insurance loss cost modeling, which characteristic distinguishes them from GLMs?
- GBMs require pre-specified interaction terms; GLMs detect interactions automatically
- GBMs automatically capture non-linear relationships and interactions; GLMs require explicit specification (Correct answer)
- GBMs are interpretable by regulators; GLMs are black-box models
- GBMs use only categorical predictors; GLMs handle continuous variables
Correct answer: GBMs automatically capture non-linear relationships and interactions; GLMs require explicit specification
GBMs build ensembles of trees that inherently capture complex non-linear relationships and variable interactions without explicit specification, unlike GLMs.
Question 7: Climate change research in the CAS context most directly impacts which actuarial function?
- Agent licensing and distribution strategy
- Catastrophe model calibration and long-term trend assumptions (Correct answer)
- Premium billing and collection processes
- Reinsurance contract legal language
Correct answer: Catastrophe model calibration and long-term trend assumptions
Climate change alters frequency and severity trends for natural perils, requiring actuaries to update catastrophe model assumptions and long-term projections.
CAS Research & Industry Advancements 2
Which CAS research initiative specifically focuses on advancing predictive modeling techniques for workers' compensation reserving?