Learn about calculating averages from grouped data with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

The geometric mean is the average of a set of products, the calculation of which is commonly used to determine the performance results of an investment or portfolio.

The term describes how much the numbers if a set of data vary from the mean. The syntax to calculate the Standard Deviation is as follows: =STDEV(sampling range) Where the sampling range ...

The median is the middle number in a sorted ascending or descending list. It can be more descriptive of the dataset than the average. It’s quite different from the mean.