A student investigated the population size of the weed Plantago major (greater plantain) on a school playing field. The total area of the field is 1200 m2.
The student randomly placed seven 0.25 m2 quadrats and recorded the number of plants in each, as shown in the table below.
| Quadrat | Number of Plantago major |
|---|---|
| 1 | 14 |
| 2 | 16 |
| 3 | 15 |
| 4 | 98 |
| 5 | 13 |
| 6 | 17 |
| 7 | 15 |
After identifying and excluding the anomalous result, what is the best estimate for the total population of Plantago major on the playing field?
4,5004,5004,500
18,00018,00018,000
72,00072,00072,000
128,900128,900128,900
