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In: Statistics and Probability
If subjects are randomly selected from a university using ID numbers, what sampling method is used?...
If subjects are randomly selected from a university using ID numbers, what sampling method is used?
If the psychologist first takes all the women, and randomly selects 51 of them by randomly drawing ID numbers. Then, she takes all the men and randomly selects 51 of them by randomly drawing ID numbers. What sampling technique did she use?
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Expert Solution
Q : If subjects are randomly selected from a university using ID numbers, what sampling method is used?
Random sampling is a part of the sampling technique in which each sample has an equal probability of being chosen, which is the exact case here.The ID number is a random basis to sample the students of the university in which each I number has equal probability of being selected.
Q : If the psychologist first takes all the women, and randomly selects 51 of them by randomly drawing ID numbers. Then, she takes all the men and randomly selects 51 of them by randomly drawing ID numbers. What sampling technique did she use?
Clustered sampling
In a clustered sample, subgroups of the population are used as the sampling unit, rather than individuals. The population is divided into subgroups, known as clusters, here the two clusters for the sampling were set of males and set of females which were randomly selected to be included in the study.
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