Averages

Given this information about averages, find the ages of these teachers.

Given the mean and standard deviation of a set of marks, what is the greatest number of candidates who could have scored 100%?

Can you work out the average speed of the van?

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

Does weight confer an advantage to shot putters?

Given a probability density function find the mean, median and mode of the distribution.

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

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

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

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