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2.2.2 Scatter diagrams and correlation

2.2.2 Scatter diagrams and correlation

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Question 19

Nadia uses the AQA Large Data Set to investigate the relationship between a car's CO emission and its CO2 _2\,2​ emission. She finds strong positive correlation and writes:

"For cars in England, CO emissions rise as CO2 _2\,2​ emissions rise."

a.

Using your knowledge of the Large Data Set, give two reasons why Nadia's statement is not justified.

[2]
b.

Nadia had to leave some cars out of her scatter diagram. Give a reason why.

[1]
c.

State one change Nadia could make to her scatter diagram to make it more informative, and give a reason.

[1]
Markscheme

2.2.2 Scatter diagrams and correlation Questions

  1. A Level
  2. /Maths
  3. /2.2.2 Scatter diagrams and correlation

157 exam-style questions on AQA A Level Maths 2.2.2 Scatter diagrams and correlation. Each one has a worked solution and a mark scheme showing where the marks go.

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