To study the security protocols at a major airport, ten passengers were randomly selected from each flight leaving the airport on a particular day and questioned about the security efforts they experienced while at the airport. This is an example of
A) simple random sampling.
B) stratified sampling.
C) cluster sampling.
D) sampling in stages.

Question

Quizplus · Accepted Answer

This is an example of stratified sampling because the population (all passengers leaving the airport on a particular day) is divided into smaller groups (flights) and random samples are taken from each of these groups (ten passengers from each flight).

To Study the Security Protocols at a Major Airport, Ten