Let's use statistics
We have chosen a variety of contexts so that you can use your statistical skills to answer some interesting questions.
Picturing the World Stage: 3 Challenge Level: 
How can we make sense of national and global statistics involving very large numbers?
Estimating Time Stage: 3 Challenge Level:
How well can you estimate 10 seconds? Investigate with our timing tool.
Reaction Timer Stage: 3 Challenge Level:
This problem offers you two ways to test reactions - use them to
investigate your ideas about speeds of reaction.
Who's the Best? Stage: 3 Challenge Level:
Which countries have the most naturally athletic populations?
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.