Which of the following is the best definition of cluster sampling?
A) The population is divided into subgroups and a simple random sample is taken from each subgroup.
B) The population is divided into subgroups; subgroups are combined into clusters, and subsets of clusters are sampled.
C) The population is divided into subgroups and a single/or several subgroup(s) is/are then selected from which either a census or a sample is drawn.
D) The population is divided into subgroups and a single/or several subgroup(s) is/are then selected from which a sample is drawn.
E) The population is divided into subgroups and a systematic sample is taken from each subgroup
Answer: The population is divided into subgroups and a single/or several subgroup(s) is/are then selected from which either a census or a sample is drawn.