Youth unemployment is a hot topic, especially in the economic downturn. The news said there have been around 400 graduates who started working in the Great Bay Area. If we collect data from all of them, is it a strategy of sampling?

Please feel free for any further inquiry.

Thank you for the explanation.

Most of the time, collecting data from the whole sample may be unfeasible and too costly.

Thank you for the inquiry. Sampling is a method of selecting a group of subjects from the whole population instead of collecting data from all of them.