2.84 Market share for food sales The pie chart shown was displayed in an article in The Scotsman newspaper

(January 15, 2005) to show the market share of different supermarkets in Scotland.

a. Pie charts can be tricky to draw correctly. Identify two problems with this chart.

b. From looking at the graph without inspecting the percentages, would it be easier to identify the mode using this graph or using a bar graph? Why?

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Market Share of Scottish Supermarket Chain Somerfields (6%). Safeway Tesco (15.2%) (27.2%) ASDA (24%) William Morrison Safeway (15.2%)