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2 Statistics

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Question 163

A study gives correlation coefficients 0.82 between exercise time and fitness score for adults, and -0.76 between exercise time and resting pulse rate.

a.

Compare the direction and strength of the two linear associations.

[2]
b.

Explain why neither coefficient alone proves that exercise causes the recorded outcome.

[2]
Markscheme

2 Statistics Questions

  1. A Level
  2. /Maths
  3. /2 Statistics

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