Question

Which of the following is incorrect about Bayesian Simulation?

(a) It does not require bootstrapping

(b) It requires bootstrapping

(c) The MCMC procedure itself involves thousands or millions of steps of resampling

(d) Posterior probabilities are assigned at each node of a best Bayesian tree as statistical support

This question was addressed to me at a job interview.

I want to ask this question from Phylogenetic Tree Evaluation in portion Phylogenetic Tree Construction Methods and Programs of Bioinformatics

Answer 1

Correct choice is (b) It requires bootstrapping

The explanation: Because of fast computational speed of MCMC tree searching, the Bayesian method offers a practical advantage over regular ML and makes the statistical evaluation of ML trees more feasible. Unlike bootstrap values, Bayesian probabilities are normally higher because most trees are sampled near a small number of optimal trees. Therefore, they have a different statistical meaning from bootstrap.