Urban planners and psychologists are interested in how environmental factors influence residents' mental health. A researcher conducted a study across eight distinct municipal districts to investigate the relationship between local green space density (measured as the percentage of tree canopy cover in residential areas) and the residents' self-reported subjective well-being (measured using a standardised questionnaire scored from 0 to 50, where higher scores indicate greater well-being).
The data collected from the eight districts (labeled A to H) are displayed in the table below:
| District | Tree canopy cover (%) | Subjective well-being score (0 to 50) |
|---|---|---|
| A | 12 | 22 |
| B | 45 | 35 |
| C | 8 | 15 |
| D | 30 | 20 |
| E | 55 | 48 |
| F | 22 | 38 |
| G | 60 | 42 |
| H | 18 | 12 |
After carrying out a Spearman's Rho inferential statistical test on the data above, the calculated value obtained was rs=+0.76r_s = +0.76rs=+0.76.
Explain what this calculated value means.
513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.