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Dividing the population into categories and drawing randomly from each gives a:
AStandardised random sample
BStationary random sample
CStaggered random sample
DStratified random sample
Answer & Solution
Correct answer: D. Stratified random sample
1. Groups are formed first.
2. A random draw follows inside each.
3. It is a stratified random sample.
_Source: OpenStax Principles of Marketing, Chapter 6, Marketing Research and Big Data._
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