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 deduce which Olympic athletics events are represented by the graphs?

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.

Do Presidents of the USA live longer now than in the past?

Can you work out how many students applied to a school, if you know about how the mean number of students has changed?

Can you work out the median weight of these children from the given means?

Given information about the mean, can you work out the missing numbers?

Can you fill this square so that the number in the middle of each line is the mean of the two numbers on either side of it?

In a club, there are four committees, which are organised according to some rules. How many people are there in the committee?

Find 4 numbers which have a mean of 7, a median of 8 and a mode of 9.