# Efficient Learning — the BBC’s Bayesian quiz engine

Published in

9 min readJun 14, 2021

*In this article, I’m going to give an overview of Bayesian statistics and talk about how we utilise user data to personalise and improve BBC Bitesize’s **Efficient Learning GCSE quiz**.*

# Example

Let’s start with an example for context.

Suppose you flip a coin 3 times and get heads each time. Is the coin biased?