Find the frequency distribution for ordinary English, and use it to help you crack the code.
This problem offers you two ways to test reactions - use them to
investigate your ideas about speeds of reaction.
Which countries have the most naturally athletic populations?
Can you decide whether these short statistical statements are always, sometimes or never true?
When Charlie retires, he's looking forward to the quiet life, whereas Alison wants a busy and exciting retirement. Can you advise them on where they should go?
How well can you estimate 10 seconds? Investigate with our timing tool.