An agricultural scientist investigated the soil health of fields managed under two different systems: Regenerative Farming and Conventional Farming. A sample of ten topsoil cores was taken from each plot and assessed using a Soil Health Index (ranging from 10 to 150, where higher scores indicate better soil quality).
| Core Sample | Regenerative Plot | Conventional Plot |
|---|---|---|
| 1 | 85 | 40 |
| 2 | 92 | 32 |
| 3 | 22 | 118 |
| 4 | 110 | 52 |
| 5 | 78 | 48 |
| 6 | 64 | 35 |
| 7 | 88 | 42 |
| 8 | 148 | 55 |
| 9 | 95 | 125 |
| 10 | 101 | 51 |
Calculate the median Soil Health Index for both the Regenerative Plot and the Conventional Plot. Show your working.
Explain why the scientist preferred to use the median rather than the mean as a measure of central tendency for this data.
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.
