A student investigated the rate of photosynthesis by measuring the volume of oxygen gas collected from pondweed over 5 minutes.
The table shows the results of four trials at a fixed light intensity.
| Trial | Volume of oxygen collected in cm3\text{cm}^3cm3 |
|---|---|
| 1 | 14.6 |
| 2 | 12.1 |
| 3 | 8.9 |
| 4 | 6.2 |
The range is the difference between the largest value and the smallest value in a set of numbers.
Which is the range of these results?
14.6 cm314.6\text{ cm}^314.6 cm3
8.4 cm38.4\text{ cm}^38.4 cm3
5.9 cm35.9\text{ cm}^35.9 cm3
2.5 cm32.5\text{ cm}^32.5 cm3
