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2.5 Data presentation and interpretation

2.5 Data presentation and interpretation

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Question 18

A regression line for life expectancy, $z\,$ years, on an air-quality score, $x$ , is $z = 76.8 + 0.703 x$ .

a.

Estimate $z\,$ when $x = 10.5$ .

[1]

b.

Interpret the gradient.

[1]

Markscheme

2.5 Data presentation and interpretation Questions

A Level
Maths
2.5 Data presentation and interpretation

278 exam-style questions on CCEA A Level Maths 2.5 Data presentation and interpretation, covering 2.5.1 Data presentation and interpretation, 2.5.2 Data presentation and interpretation, 2.5.3 Data presentation and interpretation, 2.5.4 Data presentation and interpretation, 2.5.5 Data presentation and interpretation, 2.5.6 Data presentation and interpretation, 2.5.7 Data presentation and interpretation, 2.5.8 Data presentation and interpretation, 2.5.9 Data presentation and interpretation, and 2.5 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

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