An agricultural scientist is investigating the effect of two different soil treatments, Treatment Alpha and Treatment Beta, on the root development of oak saplings. To conduct the trial, a batch of 50 young oak saplings of the same species has been prepared.
To control for any systematic differences in the initial health, height, or genetic vigour of the saplings, they must be divided into two equal groups of 25 saplings each. One group will receive Treatment Alpha, and the other will receive Treatment Beta.
Explain how randomisation could be used to allocate the 50 saplings to the two treatment groups.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 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.
