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Challenge level: Challenge Level:1 Challenge Level:2 Challenge Level:3

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Broad Topics > Handling, Processing and Representing Data > Measures of spread

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Reaction Timer

Stage: 3 Challenge Level: Challenge Level:1

This problem offers you two ways to test reactions - use them to investigate your ideas about speeds of reaction.

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May the Best Person Win

Stage: 1, 2, 3 and 4

How can people be divided into groups fairly for events in the Paralympics, for school sports days, or for subject sets?

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David and Goliath

Stage: 4 and 5 Challenge Level: Challenge Level:1

Does weight confer an advantage to shot putters?

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How Would You Score It?

Stage: 3 Challenge Level: Challenge Level:1

Invent a scoring system for a 'guess the weight' competition.

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Maximum Scattering

Stage: 5 Challenge Level: Challenge Level:2 Challenge Level:2

Your data is a set of positive numbers. What is the maximum value that the standard deviation can take?

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Stage: 5 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Given the mean and standard deviation of a set of marks, what is the greatest number of candidates who could have scored 100%?