You stand at the main entrance to a departmental store and pick the first 20 customers that enter the store after it has opened its door for business on a single day.This is an example of a systematic sample.

Question

Quizplus · Accepted Answer

This is an example of a convenience sample because the selection of the first 20 customers is based on ease of access and timing, rather than a systematic method of selecting every nth customer.

You Stand at the Main Entrance to a Departmental Store