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2.5 Data presentation and interpretation

2.5 Data presentation and interpretation

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Question 20

Points lie close to the curve y=(x−5)2y=(x-5)^2y=(x−5)2 for 0≤x≤100\leq x\leq100≤x≤10. The calculated value of r r\,r is close to zero.

Explain why this does not mean that x x\,x and y y\,y are unrelated.

[2]
Markscheme

2.5 Data presentation and interpretation Questions

  1. A Level
  2. /Maths
  3. /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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