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:
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.
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.
