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# Sleuthing pie graphs

Begin a discussion by considering the pie graph below. It is labelled in percentages, and it can be checked that they add up to 100%, representing the 'whole' for this context.

Students are then asked to consider the following graph (individually or in groups) and answer the questions.

Grocery market shares.
Source: Fairfax Syndication.

• What is the context for this pie graph?