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2.2 Data Presentation and Interpretation

2.2 Data Presentation and Interpretation

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Question 24

A researcher investigates changes in train use between 2001 and 2011 for the 348 Local Authorities in the OCR large data set.

In this question you must show detailed reasoning.

a.

Define the two variables to plot and state what each point represents.

[2]
b.

State two features that should be considered when interpreting the scatter diagram.

[2]
c.

Describe how a regression line should be used and interpreted.

[2]
d.

State two limitations of the analysis.

[2]
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 A Level Maths 2.2 Data Presentation and Interpretation, covering 2.2.1 Tables and diagrams for single variable data, 2.2.2 Area in a histogram, 2.2.3 Scatter diagrams and regression lines, 2.2.4 Informal interpretation of correlation, 2.2.5 Correlation and causation, 2.2.6 Measures of average and spread, 2.2.7 Calculations of mean and standard deviation, 2.2.8 Outliers, 2.2.9 Selecting or critiquing data presentation, and 2.2.10 Cleaning data. Each one has a worked solution and a mark scheme showing where the marks go.

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