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They have used Stratified Sample. Design because stratified sample is a sampling technique in which the researcher divided the entire target population into different subgroups, or strata, and then randomly selects the final subjects proportionally from the different strata. This type of sampling is used when the researcher wants to highlight specific subgroups within the population. So in this Research this technique is used by the researcher.
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Earn +20 ptsQ: Why do you use Stratified sampling?
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Continue Learning about Statistics
Are random sampling and stratified sampling one and same?
No.
When is it appropriate to use stratified random sampling?
it can be used when members of the population are heterogenous
Which is an effective use of stratified sampling?
Analyzing 20% of the items that are under $25,000
What is simple random sampling and stratified random sampling?
yes
Which sampling technique can assure that the profile of the sample matches the profile of the population?
Stratified sampling
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