Can you do a little mathematical detective work to figure out which number has been wiped out?
Charlie has moved between countries and the average income of both has increased. How can this be so?
Are these statistical statements sometimes, always or never true? Or it is impossible to say?
When Kate ate a giant date, the average weight of the dates decreased. What was the weight of the date that Kate ate?
How many visitors does a tourist attraction need next week in order to break even?
What is the average weight of five ballet dancers and ten rugby players?
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.
The Seven Dwarfs have seven different birthdays. How old can they be?
Find these 4 numbers, given their mode, median and range.
What happens to the average if you subtract 8 from all of the numbers?
