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2.2 Data presentation and interpretation

2.2 Data presentation and interpretation

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Question 4

Eight values have mean 46.5. Seven of the values are

42, 44, 45, 47, 48, 50, 5142,\ 44,\ 45,\ 47,\ 48,\ 50,\ 5142, 44, 45, 47, 48, 50, 51

a.

Find the eighth value.

[2]
b.

Find the standard deviation of the eight values.

[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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