K Identify the type of sampling used random systematic conve

K- Identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below.

A man experienced a tax audit. The tax department claimed that the man was audited because everyone in five randomly selected districts was being audited.

Which type of sampling did the tax department use?

Systematic

Stratified

Cluster

Random

Convenience

Solution

this is cluster sampling, where population is divided into several clusters and few of the clusters are randomly chosen.