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2.5.10 Correlation as closeness to a straight line (A-level only)

2.5.10 Correlation as closeness to a straight line (A-level only)

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Question 4

An aerodynamicist, Dr. Sterling, is investigating the relationship between the angle of attack, θ\thetaθ (degrees), and the lift coefficient, CLC_LCL​, of a prototype wing across 42 wind tunnel trials. After processing the experimental data, he calculates the product moment correlation coefficient (PMCC) to be −1.14-1.14−1.14.

Which of the following statements best describes this calculated result?

  • Definitely incorrect
  • Probably incorrect
  • Probably correct
  • Definitely correct
[2]
Markscheme

2.5.10 Correlation as closeness to a straight line (A-level only) Questions

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107 exam-style questions on OCR (MEI) A Level Maths 2.5.10 Correlation as closeness to a straight line (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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