concepts:
  - id: bayes-prior
    title: Bayes Prior
    description: Prior beliefs before evidence in a probabilistic model.
    prerequisites: []
    mastery_signals:
      - Explain a prior distribution clearly.
  - id: bayes-posterior
    title: Bayes Posterior
    description: Updated beliefs after evidence in a probabilistic model.
    prerequisites: [bayes-prior]
    mastery_signals:
      - Compare prior and posterior beliefs.
  - id: model-checking
    title: Model Checking
    description: Evaluate whether model assumptions and fit remain plausible.
    prerequisites: [bayes-posterior]
    mastery_signals:
      - Critique a model fit.