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2.2 Data presentation and interpretation

2.2 Data presentation and interpretation

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Question 7

A scatter diagram of weekly exercise time against resting pulse rate shows a strong negative trend. One point, representing an elite athlete, has an exercise time far beyond those of the other participants.

a.

Interpret the relationship.

[2]
b.

Explain why the athlete could have a large effect on a fitted regression line.

[1]
c.

Describe three checks needed before using a regression line for prediction.

[3]
Markscheme

2.2 Data presentation and interpretation Questions

  1. A Level
  2. /Maths
  3. /2.2 Data presentation and interpretation

105 exam-style questions on WJEC A Level Maths 2.2 Data presentation and interpretation, covering 2.2.1 Data presentation and interpretation, 2.2.2 Data presentation and interpretation, 2.2.3 Data presentation and interpretation, 2.2.4 Data presentation and interpretation, 2.2.5 Data presentation and interpretation, 2.2.6 Data presentation and interpretation, 2.2.7 Data presentation and interpretation, 2.2.8 Data presentation and interpretation, and 2.2 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

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