QUESTION 10 Which of the following best describes stratified sampling? The popul

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QUESTION 10 Which of the following best describes stratified sampling? The population is divided into subgroups and the sample is selected by taking a few members from each subgroup Every member of the population is put into a 'hat and the sample is drawn from the hat The population is lined up in no particular order. A fixed gap, k, called the sampling frequency is calculated. A member in the first k elements is selected, and every ith element thereafter. The sample s taken trom a set of are-selecled espents The sample is taken from passers-by in the street.

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Ans:

stratified sampling:

The population is divided into subgroups and sample is selected by taking few numbers from each subgroup.

(first option is correct)

Stratified sampling refers to a type of sampling method . With stratified sampling, the researcher divides the population into separate groups, called strata. Then, a probability sample (often a simple random sample ) is drawn from each group.Stratified sampling has several advantages over simple random sampling.

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