This section of the website gives you tools to test your understanding, vocabulary and maths skills.
Whenever you see the brain in the corner, just click on it to return to this page.
All the answers to those mind-bending self-test questions in Andy's book.
Test your understanding of terminology and statistical vocabulary with these glossary flashcards.
Test your maths skills with this simple diagnostic tool; it includes the basic numerical skills you need to understand statistics.