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Data handling and analysis

Data handling and analysis

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Question 145

An environmental scientist measures the dissolved oxygen levels (in mg/L\text{mg/L}mg/L) across 150 different locations in a freshwater lake system to assess aquatic health.

The scientist calculated the measures of central tendency for these dissolved oxygen concentrations:

  • Mean oxygen level: 5.2 mg/L5.2\text{ mg/L}5.2 mg/L
  • Median oxygen level: 6.8 mg/L6.8\text{ mg/L}6.8 mg/L
  • Mode oxygen level: 8.1 mg/L8.1\text{ mg/L}8.1 mg/L

What sort of distribution does this data show?

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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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