4.1 Averages GCSE PowerPoint Lesson

In this 37-slide lesson, pupils will deepen their understanding of the four key averages: mean, median, mode, and range (a measure of spread). Through a series of structured examples, they will learn how to calculate each average from a data set and interpret what each measure tells us. The lesson also explores the impact of outliers on different averages, particularly how they can skew the mean, and when alternative measures (like the median or mode) provide a more representative summary of the data. Pupils will be encouraged to think critically about which average is most appropriate in different contexts.

The lesson includes:

• Clear, guided examples

• Discussion opportunities from Think, Pair, Share

• Mini whiteboard section to check understanding and clarify misconceptions

• Four structured tasks to practise key skills

• Challenge activity to extend and deepen learning

Perfect for engaging learners while reinforcing essential data and statistics concepts.