An occupational psychologist wanted to investigate whether there is a relationship between the average daily ambient noise level in an open-plan office and the concentration fatigue experienced by employees. They monitored the daily noise levels in decibels (dB) near ten employees' desks and assessed each employee's self-reported concentration fatigue score at the end of the week (using a validated scale from 0 to 100, where higher scores indicate higher fatigue).
The raw data and their corresponding rankings are displayed in the table below:
| Employee | Ambient Noise Level, NNN (dB) | Concentration Fatigue Score, FFF (0–100) | Rank of Noise Level | Rank of Fatigue Score |
|---|---|---|---|---|
| A | 45 | 22 | 2 | 2 |
| B | 78 | 80 | 9 | 9 |
| C | 55 | 38 | 4 | 4 |
| D | 62 | 45 | 5 | 5 |
| E | 68 | 52 | 6 | 6 |
| F | 83 | 92 | 10 | 10 |
| G | 50 | 30 | 3 | 3 |
| H | 71 | 60 | 7.5 | 7 |
| I | 71 | 72 | 7.5 | 8 |
| J | 41 | 14 | 1 | 1 |
Draw a fully labelled scatter diagram representing the raw data collected from this investigation.
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.