An agricultural scientist is researching the relationship between the daily average duration of artificial UV-B exposure and the yield of a bioactive compound, resveratrol, in a specific variety of red grapevines. Data from eight experimental greenhouses are recorded in Table 1 below.
Table 1: Daily average duration of UV-B exposure (minutes) and resveratrol yield (mg/g) across eight experimental greenhouses (labelled P–W)
| Greenhouse | P | Q | R | S | T | U | V | W |
|---|---|---|---|---|---|---|---|---|
| Daily UV-B exposure (minutes) | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 |
| Resveratrol yield (mg/g) | 0.4 | 0.9 | 1.3 | 1.8 | 2.2 | 2.7 | 3.1 | 3.6 |
What conclusion might the scientist draw, based on the results of the study?
19 exam-style questions on AQA A Level Psychology Correlations. Each one has a worked solution and a mark scheme showing where the marks go.