Frequency tables can be used to help present sets of data. There are 4 children aged 10, which gives a total age of 40 in that category. There are 6 children aged 11, which gives a total age of 66 in ...

The mean is found by adding up all the numbers and dividing by how many numbers there are. To find the mean in this example, the total number of goals must be found and then divided by the number of ...