Averages

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

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

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

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

Does weight confer an advantage to shot putters?

Can you make all of these statements about averages true at the same time?

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

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

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.