In order to study the mean pulse rate of people in his town, Jerry samples the population by dividing the residents by regions a nd randomly selecting 12 of the regions. He collects data from all residents in the selected regions. Which type of sampling is used?
2 answers:
Answer:
Stratified sampling
Explanation:
When carrying out a stratified sampling, the researchers split the population into different groups . The resulting sample is a consequence of some members from each group who are chosen randomly . This method ensures representation for every individual in each group in the sample, and it avoids a biased result .
Answer:
Cluster sampling
Explanation:
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