The interquartile range (IQR) is a statistical measure of the middle values of a sample data set that is separated into four equal parts. This middle-value grouping can provide a median range ...

Learn about and revise how to find the mean, median and mode averages from data with GCSE Bitesize AQA Maths.

Learn about and revise how to find the mean, median and mode averages from data with this BBC Bitesize GCSE Maths Eduqas study guide.