Practice question · True or false
Two GIS layers clustering in the same district establishes a link between them.
Hints
- What else clusters in a district?
- Population density clusters everything.
Show the answer
False
Why
False. Both may cluster on a third thing, population density, so anything counted rather than rated will appear to coincide. Snow's cholera map worked because he compared rates against a specific water supply and had a mechanism, not because the dots overlapped.
Practise GIS and Spatial Analysis
The app has 3 more questions on this lesson, and keeps your place in the course. History I is free to start.
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