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

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Question 3

An oceanographer, Dr. Aris, is investigating the linear relationship between seawater salinity levels SSS and dissolved oxygen concentration DDD across 18 hydrothermal vent samples. After performing her calculations, she determines the product moment correlation coefficient (PMCC) for the dataset.

Which of the following statements best describes her calculated result of −1.42-1.42−1.42?

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

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

  1. A Level
  2. /Maths
  3. /2.5.10 Correlation as closeness to a straight line (A-level only)

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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