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2.5 Data presentation and interpretation

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Question 78

For five paired observations, ∑x=15\sum x=15∑x=15, ∑y=22\sum y=22∑y=22, ∑x2=55\sum x^2=55∑x2=55, ∑y2=110\sum y^2=110∑y2=110 and ∑xy=76\sum xy=76∑xy=76.

Calculate and interpret the product-moment correlation coefficient.

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Markscheme

2.5 Data presentation and interpretation Questions

  1. A Level
  2. /Maths
  3. /2.5 Data presentation and interpretation

278 exam-style questions on CCEA A Level Maths 2.5 Data presentation and interpretation, covering 2.5.1 Data presentation and interpretation, 2.5.2 Data presentation and interpretation, 2.5.3 Data presentation and interpretation, 2.5.4 Data presentation and interpretation, 2.5.5 Data presentation and interpretation, 2.5.6 Data presentation and interpretation, 2.5.7 Data presentation and interpretation, 2.5.8 Data presentation and interpretation, 2.5.9 Data presentation and interpretation, and 2.5 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

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