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25 December, 13:15

Before polling students in the Scion of Business, a researcher divides all the current students into groups based on their class standing (freshman, sophomores, etc). Then, she randomly draws a sample of 50 students from each of these groups to create a representative sample of the entire student body in the school. Which of the following sampling methods is the researcher practicing?

A. Simple random sampling

B. Systematic random sampling

C. Stratified random sampling

D. Cluster sampling

E. Snowball sampling

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  1. 25 December, 13:41
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    The answer is C. Stratified random sampling is a method of sampling that involves the division of a population into smaller sub-groups known as strata. In stratified random sampling or stratification, the strata are formed based on members' shared attributes or characteristics such as income or educational attainment. Since the students are divided into classes, this is a stratified random sample.
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