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Question 1
In the Kaplan-Meier (product-limit) estimator of the survival function S(t), what role does a censored observation play at the moment of censoring?
Correct Answer:
It reduces the risk set for subsequent event times but does not itself cause a drop in the survival estimate
Question 2
A study follows 10 lives. Deaths occur at t=2 (1 death) and t=5 (1 death), with one life censored at t=3. Using Kaplan-Meier, what is the estimated survival probability S(5)?
Correct Answer:
0.7875
Question 3
The Nelson-Aalen estimator estimates which quantity directly?
Correct Answer:
The cumulative hazard function H(t)
Question 4
In the Cox proportional hazards model, the hazard is written lambda(t; z) = lambda_0(t) exp(beta^T z). What does the term lambda_0(t) represent?
Correct Answer:
The baseline hazard, common to all individuals when all covariates are zero
Question 5
A key advantage of the Cox proportional hazards model over fully parametric survival models is that it:
Correct Answer:
Estimates the regression coefficients without specifying the form of the baseline hazard
Question 1
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About this Exam

Prepare with the IAI CS2 Practice Questions - IAI Subject CS2 Risk Modelling and Survival Analysis Exam practice quiz. This question bank includes 100 questions covering distribution, model, markov, because, and chain. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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IAI CS2 Practice Questions - IAI Subject CS2 Risk Modelling and Survival Analysis Exam

This practice set contains 100 questions from the matching question bank and focuses on distribution, model, markov, because, and chain. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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