Cleanup : Articles in WikiProject Statistics are regularly scanned automatically for cleanup templates. A list of statistics articles that need cleanup is here. You can help by reviewing the list and correcting any deficiencies.
Joint probability distribution needs some examples, better examples, perhaps an explanation of uses and relationships with other concepts in statistics
Bayesian linear regression alternative priors, advanced regression models, marginal densities, prior and posterior predictive density
Monte Carlo sampling: Application to Approximate Bayesian Inference needs more explanation