Question

A wildlife management organization is interested in estimating the number of moose in a particular region. Organization employees divide the region into 10 sections and randomly select four sections to survey the number of moose present. What sampling method is being used? a. Stratified random sampling b. Cluster sampling c. Systematic sampling d. Judgment sampling

Answer 1

The answer is (B) Cluster sampling. It can also be referred to as area sampling method. it is useful when the population consists of a large number of similar groups which are wide spreading. Population is usually divided into clusters based on geographical reasons. The sampling units are grouped rather than individual at first stage . A sample of such clusters is the selected and the the elements from the selected clusters are studied. An advantage is that it cut down the cost of preparing a sampling frame or travel and other administrative costs. The best result occurs when elements within clusters are internally heterogeneous.

Explanation: