A student investigated the abundance of a pioneer plant species, Taraxacum officinale, in a meadow. They placed seven random quadrat samples of size 0.25 m2 and recorded the number of individual plants in each quadrat. The results are shown in the table below:
| Quadrat sample | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| Number of plants | 18 | 22 | 18 | 29 | 21 | 18 | 28 |
Which option gives the correct values for the mean, median, and mode of this dataset?
Mean = 212121, median = 222222, mode = 181818
Mean = 222222, median = 212121, mode = 181818
Mean = 222222, median = 181818, mode = 212121
Mean = 181818, median = 212121, mode = 222222
45 exam-style questions on OCR A A Level Biology Analysis. Each one has a worked solution and a mark scheme showing where the marks go.