Question

question
when considering different sampling methods, cluster sampling includes the steps: ______.

select the correct answer below:
○ use simple random sampling to select a set of groups; every individual in the chosen groups is included in the sample
○ list the members of the population; use simple random sampling to select a starting point in the population; let k = (number of individuals in the population)/(number of individuals needed in the sample); choose every kth individual in the list starting with the one that was randomly selected
○ divide the population into groups; use simple random sampling to identify a proportionate number of individuals from each group
○ identify individuals of the population that are easily accessible; obtain data from these individuals

Explanation:

• For cluster sampling: First, the population is divided into clusters (groups). Then, simple random sampling is used to select some clusters. Finally, all individuals within the selected clusters are included in the sample.
• The second option describes systematic sampling (using a starting point and sampling every kth individual).
• The third option describes stratified sampling (sampling proportionately from each group).
• The fourth option describes convenience sampling (using easily accessible individuals).
• So the first option matches the steps of cluster sampling.

Answer:

A. use simple random sampling to select a set of groups; every individual in the chosen groups is included in the sample