Students learn how to describe relationships between two variables and illustrate them using scatter graphs. Scatter graphs are used to check for correlation in sets of real life data including population statistics in the United Kingdom.

The start of the lesson is used to recap reading data from pie charts. The plenary challenges students to use the line of best bit to predict missing values.

##### Differentiated Learning Objectives

- All students should be able to plot a scatter graph.
- Most students should be able to describe relationships between two variables and illustrate them using scatter graphs.
- Some students should be able to identify when correlation does not mean causation.

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