Skip to content

Course home

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)

EasyMediumHard
1234567
Question 7

A glaciologist is investigating the linear relationship between the temperature of the ice, TTT, and the concentration of a trapped gas, GGG. Four different models suggest the following potential values for the product moment correlation coefficient, rrr, for their dataset:

  • r=sin⁡(4)r = \sin(4)r=sin(4)
  • r=ln⁡(0.5)r = \ln(0.5)r=ln(0.5)
  • r=π3r = \frac{\pi}{3}r=3π​
  • r=2−2r = \sqrt{2} - 2r=2​−2

Which of the following is not a possible value for rrr?

[3]
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.

Question bank