Occupational psychologists investigated the impact of the working environment on employees' focus. They administered a daily self-report survey to employees, using a scale of 1 to 10 (where 1 = 'extremely distracted' and 10 = 'completely focused'). Data from the first twenty open-plan office workers and the first twenty remote (work-from-home) workers who responded are presented in the tables below.
Table 1: Daily focus ratings given by open-plan office and remote workers
| office | remote |
|---|---|
| 6 | 8 |
| 4 | 9 |
| 7 | 7 |
| 8 | 10 |
| 4 | 8 |
| 6 | 9 |
| 4 | 8 |
| 7 | 9 |
| 6 | 8 |
| 8 | 10 |
| 4 | 8 |
| 6 | 9 |
| 7 | 9 |
| 4 | 7 |
| 8 | 8 |
| 4 | 9 |
| 6 | 10 |
| 5 | 8 |
| 8 | 9 |
| 5 | 9 |
A partly completed table of measures of central tendency for the data collected in Table 1 is presented below.
| Measures of central tendency for the focus ratings of open-plan office and remote workers | ||
|---|---|---|
| office | remote | |
| mean | 8.6 | |
| median | 6.0 | |
| mode | 4.0 |
Calculate the mean focus rating of employees working in the open-plan office. Write your answer to two significant figures.