Environmental Data Analysis
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Environmental Data Analysis
Stream observations
The team counted litter items at the same stream bend on six afternoons. The counts were: 4, 6, 5, 4, 9, 2.
- Mean, because it uses every value in the calculation
- Median, because it uses every value in the calculation
- Mode, because it is the total divided by the number of afternoons
Rain after the storm
The team also recorded rainfall for five days, in millimetres: 0, 2, 2, 6, 15.
Choose a useful display
A second site was checked on four visits. The number of native birds seen was 7, 10, 8, 11.
- A line graph, with visits in time order
- A pie chart, because the counts make parts of a whole
- A number line, because it shows categories
2 printable pages
Page 1
Page 2
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