Using the box plot, give one comparison of central tendency and one comparison of spread for the two regions - AQA - A-Level Maths Pure - Question 12 - 2020 - Paper 3
Question 12
Using the box plot, give one comparison of central tendency and one comparison of spread for the two regions.
Comparison of central tendency
Comparison of spread
Worked Solution & Example Answer:Using the box plot, give one comparison of central tendency and one comparison of spread for the two regions - AQA - A-Level Maths Pure - Question 12 - 2020 - Paper 3
Step 1
Comparison of central tendency
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Answer
The median CO₂ emissions for London is 142 g/km, which is greater than the median for the North West region, which stands at 129 g/km. This indicates that cars in London generally have higher emissions compared to those in the North West.
Step 2
Comparison of spread
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Answer
The range of CO₂ emissions in London is 307 g/km (from 39 to 346 g/km), while the range for the North West is 343 g/km (from 13 to 356 g/km). This suggests that the spread of emissions is wider in the North West than in London, indicating more variability in emissions among cars in that region.
