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2.2 L: Data presentation and interpretation

2.2 L: Data presentation and interpretation

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Question 6
57%

The distance travelled by 100 people to an event is summarised below.

Distance (nearest mile)Frequency
0 – 94
10 – 1919
20 – 2941
30 – 3926
40 – 499
50 – 591

You may use: ∑fx=2651\sum fx = 2651∑fx=2651 and ∑fx2=80434.25\sum fx^2 = 80434.25∑fx2=80434.25

a.

Use linear interpolation to estimate the median distance.

[2]
b.

Estimate the mean distance.

[2]
c.

Estimate the standard deviation.

[2]
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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