Mathematics · Statistics and Sampling
A company carries out a national survey. It first divides the country into constituencies and selects 50 constituencies at random. From each constituency, 5 polling districts are randomly chosen. Finally, a random selection of 30 people is made from the electoral register of each chosen district. What sampling method is being implemented?
- 1Simple random sampling
- 2Multi-stage sampling✓
- 3Systematic sampling
- 4Stratified sampling
Correct answer
Multi-stage sampling
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