Averages

From the mean of 64 numbers, and the mean of the first 36 of these numbers, can you work out the mean of the last 28 numbers?

Charlie has moved between countries and the average income of both has increased. How can this be so?

If you have a large supply of 3kg and 8kg weights, how many of each would you need for the average (mean) of the weights to be 6kg?

If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?

What is the average weight of five ballet dancers and ten rugby players?

How does Snow White need to change her result after the mix-up?

Can you work out Ali's age based on the diagram?

Are these statistical statements sometimes, always or never true? Or it is impossible to say?

Find the missing number if the mean, median and mode are all the same.

Decide which charts and graphs represent the number of goals two football teams scored in fifteen matches.