(i)
Study Figure 5a. It shows some sample data about shingle size along a stretch of coastline.
Calculate the mean shingle size across the five sites.
Give your answer to one decimal place.
You must show all your workings in the space below.
(2)
Site | Mean shingle size (mm) |
1 | 8.1 |
2 | 14.5 |
3 | 16.1 |
4 | 15.0 |
5 | 30.0 |
Figure 5a
Coastal data collected by a group of students
(ii)
Complete Figure 5b below for sites 1 and 4 using data in Figure 5a.
(2)
(iii)
Site 5 shows an anomalous result.
Suggest one possible explanation for this.
(2)
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