Using sampling concepts, it is found that this is an example of a Stratified sample.
Samples are classified as:
- Convenient: Drawn from a conveniently available pool.
- Random: All the options into a hat and drawn some of them.
- Systematic: Every kth element is taken.
- Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
- Stratified: Also divides the population into groups. However, only some elements of each group are surveyed.
In this problem, the population is divided into groups, according to the 8 districts, and then 30 members of each district is chosen, which is a stratified sample.
A similar problem is given at https://brainly.com/question/25122507
