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.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.