Read class boundaries and distinguish rates from totals.
Skills resources are shared. Check your qualification page for its specific assessment conditions.
Choropleth maps
The shading represents a percentage of households, not a total. Class boundaries are lower-inclusive and upper-exclusive.
District
Reported damage (%)
Households
A
7
1000
B
11
500
C
25
500
D
31
100
Fictional district flood survey. Original fictional resource; not an official map or real dataset.
On a small screen, scroll the diagram sideways to see the full resource.
Resource description
A–D use these non-overlapping classes: 0 to less than 10%; 10 to less than 20%; 20 to less than 30%; 30 to less than 40%. A has 1,000 households and D has 100 households.
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.