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2.2 Data Presentation and Interpretation

2.2 Data Presentation and Interpretation

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Question 24

The times, in seconds, taken by 12 athletes to run 400 m are

45.2,46.9,46.1,46.2,45.4,45.1,47.8,45.4,45.5,46.1,46.4,45.745.2,46.9,46.1,46.2,45.4,45.1,47.8,45.4,45.5,46.1,46.4,45.745.2,46.9,46.1,46.2,45.4,45.1,47.8,45.4,45.5,46.1,46.4,45.7.

a.

Find the mean.

[2]
b.

Find the sample standard deviation.

[3]
c.

Find the median and quartiles.

[3]
Markscheme

2.2 Data Presentation and Interpretation Questions

  1. A Level
  2. /Maths
  3. /2.2 Data Presentation and Interpretation

121 exam-style questions on OCR (MEI) A Level Maths 2.2 Data Presentation and Interpretation, covering 2.2.1 Types of data and standard diagrams, 2.2.2 Area in a histogram is proportional to frequency, 2.2.3 Cumulative frequency diagram, 2.2.4 Describe frequency distributions, 2.2.5 Samples and theoretical distributions, 2.2.6 Interpret a scatter diagram, 2.2.7 Distinct sections and outliers in scatter diagrams, 2.2.8 Correlation and causation, 2.2.9 Select or critique data presentation techniques, 2.2.10 Measures of central tendency, 2.2.11 Simple measures of spread, 2.2.12 Variance and standard deviation, 2.2.13 Outliers, 2.2.14 Cleaning data, 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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