In an agricultural field experiment investigating the effects of two irrigation systems (Subsurface Drip Irrigation versus Overhead Sprinkler Irrigation) on the crop yield of heirloom tomato plants, researchers allocated 80 plots of land to one of the two irrigation conditions.
Explain why the researchers allocated the 80 plots of land randomly to the two irrigation conditions.
Describe a practical procedure the researchers could use to randomly allocate the 80 plots of land to the two irrigation conditions so that each group has an equal number of plots.
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.
