Question

multiple choice. choose the one alternative that best completes the statement or answers the question. what type of sampling is being employed if the country is divided into economic classes and a sample is chosen from each class to be surveyed? a) systematic sampling b) stratified sampling c) cluster sampling d) random sampling

Explanation:

Stratified sampling divides the population into subgroups (strata) based on certain characteristics (here, economic classes) and then samples from each subgroup. In systematic sampling, elements are selected at regular intervals. Cluster sampling divides the population into clusters and samples some of the clusters. Random sampling selects elements randomly without dividing the population into subgroups first.

Answer:

B. stratified sampling