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2.2 Data presentation and interpretation

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Question 26

Tony models his daily winter energy bill e e\,e pounds from average temperature ttt °C by

e=7.3−0.4te=7.3-0.4te=7.3−0.4t.

a.

Describe the correlation.

[1]
b.

Interpret the gradient.

[1]
c.

Explain why the model may be unsuitable in summer.

[1]
Markscheme

2.2 Data presentation and interpretation Questions

  1. A Level
  2. /Maths
  3. /2.2 Data presentation and interpretation

105 exam-style questions on WJEC A Level Maths 2.2 Data presentation and interpretation, covering 2.2.1 Data presentation and interpretation, 2.2.2 Data presentation and interpretation, 2.2.3 Data presentation and interpretation, 2.2.4 Data presentation and interpretation, 2.2.5 Data presentation and interpretation, 2.2.6 Data presentation and interpretation, 2.2.7 Data presentation and interpretation, 2.2.8 Data presentation and interpretation, and 2.2 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

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