Averages

problem
Wipeout

Age

11 to 16

Challenge level

Can you do a little mathematical detective work to figure out which number has been wiped out?
problem
About average

Age

11 to 14

Challenge level

Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?
article
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?
problem
Birdwatch

Age

7 to 11

Challenge level

Have a look at this data from the RSPB 2011 Birdwatch. What can you say about the data?
problem
Statistical shorts

Age

11 to 16

Challenge level

Can you decide whether these short statistical statements are always, sometimes or never true?
problem
David and Goliath

Age

14 to 18

Challenge level

Does weight confer an advantage to shot putters?
problem
Top marks

Age

16 to 18

Challenge level

Can you make all of these statements about averages true at the same time?
problem
How would you score it?

Age

11 to 14

Challenge level

Invent a scoring system for a 'guess the weight' competition.
problem
Seven dwarfs

Age

11 to 14

Challenge level

The Seven Dwarfs have seven different birthdays. How old can they be?
problem
Better spelling

Age

11 to 14

Challenge level

Weekly Problem 12 - 2010
Can Emily increase her average test score to more than $80$%? Find out how many more tests she must take to do so.