CAS Exam MAS-II Fall 2018, Question 20
Study guide: Exam MAS-II
The trace plot for a Bayesian MCMC chain is provided below.
Determine which of the following best describes any problem with the chain and the action that should be taken.
- A) There is a low level of auto-correlation; the mean of the likelihood distribution should be changed.
- B) There is a low level of auto-correlation; many more iterations are needed to make inferences from the samples of the posterior.
- C) There is a high level of auto-correlation; the variance of the prior distribution should be reduced.
- D) There is a high level of auto-correlation; many more iterations are needed to make inferences from the samples of the posterior.
- E) There are no issues with this chain.
Answer this question and see the worked solution