Calculate an average rate while preserving the period measured.
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Coastal change rates
Both surveys use the same defined cliff-top line and coordinate system. Movement is a net landward change over the whole period.
Record
Value
Initial survey year
2000
Final survey year
2015
Landward movement of the same cliff-top line (m)
30
Fictional repeated cliff-top surveys All values are synthetic.
Resource description
Fictional repeated cliff-top surveys
Use the resource carefully
State the unit and the part of the resource you used. A pattern in a fictional dataset is evidence for that exercise; it does not establish a fact about a real place.
Check whether an explanation is supported by the data or needs additional geographical knowledge. For statistical tasks, a calculated result does not establish causation or significance by itself.