Use your skill and judgement to match the sets of random data.
This tool allows you to create custom-specified random numbers, such as the total on three dice.
Can you make a set of random data which will fool the computer?
A geographical survey: answer the tiny questionnaire and then analyse all the collected responses...
How was the data for this problem compiled? A guided tour through the process.
Where do people fly to from London? What is good and bad about these representations?