PLEASE HELP I WILL MARK BRAINLIST Which of the following statements is true about cluster sampling? O Once clusters are selected, participants are randomly selected from those clusters.
O Cluster selection does not have to be random, as long as each chosen cluster is randomly sampled.
O Cluster sampling uses clusters, which are homogenous groups in regard to characteristics being studied.
O Participants within clusters usually live within close proximity, which saves time and money for data collection.