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2.2 L: Data presentation and interpretation

2.2 L: Data presentation and interpretation

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Question 41

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 L: Data presentation and interpretation Questions

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

244 exam-style questions on AQA A Level Maths 2.2 L: Data presentation and interpretation, covering 2.2.1 Single-variable data diagrams, 2.2.2 Scatter diagrams and correlation, 2.2.3 Central tendency, variation and standard deviation, 2.2.4 Outliers and cleaning data, and 2.2 L: Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

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