An environmental scientist is investigating the relationship between elevation and mean summer temperature in a mountain range. She selects ten meteorological stations at different elevations and records their altitude (in hundreds of meters) and their mean summer temperature (in ∘C^\circ\text{C}∘C).
The results for each station are shown in the table below:
| Station | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Altitude (100 m) | 2 | 4 | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 20 |
| Mean Summer Temperature (∘C^\circ\text{C}∘C) | 14 | 15 | 16 | 14 | 18 | 11 | 12 | 7 | 11 | 5 |
Estimate the product moment correlation coefficient (rrr) most likely to result from an analysis of this data.
−0.80-0.80−0.80
−0.30-0.30−0.30
+0.30+0.30+0.30
+0.80+0.80+0.80
235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.