Table 2.
Time spent by each volunteer.
| Time spent by each volunteer/s | 21 | 23 | 25 | 21 | 23 | 26 | 25 | 22 | 21 | 24 |
| 24 | 23 | 25 | 21 | 22 | 23 | 24 | 22 | 25 | 23 | |
| Average time/s | 23.15 | |||||||||
| Range | 5 | |||||||||
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