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Earn +20 ptsQ: Which is an effective use of stratified sampling?
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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
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
What is a stratified random sample?
Stratified random sampling is a sampling scheme which is used when the population comprises a number of strata, or subsets, which are similar within the strata but differ from one stratum to another. One example is school children stratified according to classes, or salaries stratified by departments.A simple random sample may not have enough representatives from each stratum and the solution is to use stratified random sampling. Under this scheme, the overall sampling proportion (sample size/population size) is determined and a sample is drawn from each stratum which represents the same proportion.
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