Bayesian Thinking Basics

Summary

Updating your belief about something as new evidence arrives, using Bayes' theorem — a mindset (not just a formula) that's especially useful for reasoning about model confidence and rare events.

• 1Work through a classic Bayesian update example (like the medical test false-positive problem).
• 2Learn the difference between a prior, a likelihood, and a posterior in plain language.
• 3Practice updating a belief step by step as you're given new pieces of evidence.