All about averages
How well do you really understand mean, median and mode?
In these puzzling problems we invite you to be playful with numbers and discover how averages change when data sets are tweaked.
In these puzzling problems we invite you to be playful with numbers and discover how averages change when data sets are tweaked.
About Average Age 11 to 14
Challenge Level
Challenge Level
Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?
Unequal Averages Age 11 to 14
Challenge Level
Challenge Level
Play around with sets of five numbers and see what you can discover about different types of average...
Wipeout Age 11 to 16
Challenge Level
Challenge Level
Can you do a little mathematical detective work to figure out which number has been wiped out?
The Lives of Presidents Age 11 to 16
Challenge Level
Challenge Level
Do Presidents of the USA live longer now than in the past?
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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.