Theory question 102
Tools of Economic AnalysisSection A (answer one question only from this section)
The table below shows the age distribution of a hypothetical population.
Age | No. of people (million)
under 20 | 20.90
20 – 29 | 13.75
30 – 59 | 12.10
60 and above | 8.25
Total | 55.00
Present the above information in the form of a pie chart. Show your workings clearly.
Show the model answer
Model answer
Angle = (group ÷ total) × 360°
Under 20: 20.90/55 × 360 = 136.8°
20 – 29: 13.75/55 × 360 = 90°
30 – 59: 12.10/55 × 360 = 79.2°
60 and above: 8.25/55 × 360 = 54°
Check: 136.8 + 90 + 79.2 + 54 = 360°
Draw a circle, measure the sectors with a protractor, label each sector (and its angle) and give the chart a title and key.
Explanation
Marks go to correct angles and a neat, labelled chart.