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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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