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In order to study the mean pulse rate of people in his town, Jerry samples the population by dividing the residents by regions and randomly selecting 12 of the regions. He collects data from all residents in the selected regions. Which type of sampling is used?

Respuesta :

ununseptiumaorta

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.

aliamitchellasm

Answer:

Cluster sampling

Explanation:

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