Practice question · Match the pairs
Match each sampling strategy to its logic.
- Random sampling
- Stratified sampling
- Judgment sampling
- Total excavation
- Each terrain zone guaranteed coverage
- Everything dug, rare, costly, unrepeatable
- Expertise targets the likeliest spots
- Every square an equal chance, bias excluded
Hints
- Each strategy defends against a different bias.
- One deliberately targets the most promising ground.
Show the answer
- Random sampling → Every square an equal chance, bias excluded
- Stratified sampling → Each terrain zone guaranteed coverage
- Judgment sampling → Expertise targets the likeliest spots
- Total excavation → Everything dug, rare, costly, unrepeatable
Why
Since no one can dig everything, statistics chooses. Random protects against wishful digging; stratified protects against lucky terrain; judgment bets on experience, most projects blend all three.
Practise Excavation Methodology
The app has 5 more questions on this lesson, and keeps your place in the course. History I is free to start.
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