Discover what quartiles are in statistics, how to calculate them, and see examples to help you interpret data more ...

GCSE Averages and range - WJEC Finding the mean from a table Averages are used in everyday life to give us information about a set of numerical data, give an overview of the values seen and tell ...

Calculating the mean is one of many methods of finding an average. To calculate the mean, you add up all the numbers in the set, then divide the total by the number of numbers you added.