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May the best person win
How can people be divided into groups fairly for events in the Paralympics, for school sports days, or for subject sets?
Measures of spread
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problemMaximum scattering
Age16 to 18Challenge level
Your data is a set of positive numbers. What is the maximum value that the standard deviation can take? -
problemFavouriteHow would you score it?
Age11 to 14Challenge level
Invent a scoring system for a 'guess the weight' competition.
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problemFavouriteAbout average
Age11 to 14Challenge level
Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?
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problemFavouriteHalf a minute
Age11 to 14Challenge level
Anna, Ben and Charlie have been estimating 30 seconds. Who is the best?
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problemDavid and Goliath
Age14 to 18Challenge level
Does weight confer an advantage to shot putters?
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problemSpread
Age16 to 18Challenge level
Given the mean and standard deviation of a set of marks, what is the greatest number of candidates who could have scored 100%?