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Data handling and analysis

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Question 33

What do the data in Figure 1 seem to suggest?

Figure 1

Bar chart showing Mean Lead Concentration in soil before and after remediation for Phytoremediation and Chemical Soil Washing.

Remediation MethodMean Pre-remediation lead concentration (mg/kg)Mean Post-remediation lead concentration (mg/kg)
Phytoremediation650420
Chemical Soil Washing580190
[3]

Data handling and analysis Questions

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

Practise AQA A Level Psychology Data handling and analysis with exam-style questions for A Level Psychology. 263 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank