There are 7 NRICH Mathematical resources connected to Measures of spread, you may find related items under Handling, processing and representing data.
Broad Topics > Handling, processing and representing data > Measures of spread
Anna, Ben and Charlie have been estimating 30 seconds. Who is the best?
Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?
Invent a scoring system for a 'guess the weight' competition.
How can people be divided into groups fairly for events in the Paralympics, for school sports days, or for subject sets?
Your data is a set of positive numbers. What is the maximum value that the standard deviation can take?
Given the mean and standard deviation of a set of marks, what is the greatest number of candidates who could have scored 100%?