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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 6

An atmospheric scientist records the relationship between the altitude hhh (in km) and the air temperature TTT (in ∘C{}^\circ\text{C}∘C) above a fixed ground location. The resulting scatter graph shows that as altitude increases, the temperature decreases consistently. The data points are positioned extremely close to a straight line of best fit, with almost no visible deviation from the linear path.

Which of the options below best describes the correlation between hhh and TTT?

  • moderate positive

  • strong positive

  • moderate negative

  • strong negative

Scatter graph of air temperature against altitude, showing a strong negative correlation with points very close to a descending straight-line pattern.

[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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