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Data handling and analysis

Data handling and analysis

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Question 10

Environmental Soil Analysis

In an environmental survey of a post-industrial brownfield site, a sample of 150 core soil locations was analyzed for cadmium contamination. The cadmium concentration, ccc, was measured in milligrams per kilogram (mg/kg\text{mg/kg}mg/kg).

The researchers calculated measures of central tendency for the cadmium concentrations, obtaining the following results:

  • Mean concentration: 8.4 mg/kg
  • Median concentration: 5.2 mg/kg
  • Mode concentration: 2.1 mg/kg

Sketch a graph to show the most likely distribution curve for the cadmium concentrations in this survey. Label the axes of your graph and clearly mark on the horizontal axis the positions of the mean, median, and mode, indicating their numerical values.

[3]
Markscheme

Data handling and analysis Questions

  1. A Level
  2. /Psychology
  3. /Data handling and analysis

235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.

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