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Annual Carbon Dioxide Emissions

The table below shows information about the annual CO₂ emissions from 140 cities.

a) Work out an estimate for the mean CO₂ emissions across the 140 cities.

[3 marks]

b) Estimate the total amount of CO₂ emitted from the 140 cities by using the mean value.

[1 mark]

c) Draw a frequency polygon representing the table.

[3 marks]

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