Thirty work orders are selected from a filing cabinet containing 500 work order folders by choosing every 15th folder.Which sampling method is this?
A)Simple random sample
B)Systematic sample
C)Stratified sample
D)Cluster sample

Question

Quizplus · Accepted Answer

This is a systematic sample method, as the selection of every 15th folder from the filing cabinet is following a predetermined system or pattern. It is not a simple random sample, as the folders are not being selected randomly from the entire population, but instead following a specific pattern. It is also not a stratified or cluster sample, as there is no grouping or clustering of the population being studied.

Thirty Work Orders Are Selected from a Filing Cabinet Containing