Population

In research, the population is the full group to which your findings are meant to apply. It can be people, such as all first-year nursing students in a country, but it can also be organizations, documents, events, or any other unit of analysis. The population is defined by explicit criteria, such as location, time period, and relevant characteristics, and it is rarely studied in full. Instead, researchers select a sample from it and use that sample to make claims about the whole.

In a thesis, a clearly defined population sets the boundaries of your claims. Examiners routinely check whether your conclusions match the group you actually studied. Stating the population precisely in your methodology chapter, and returning to it when you discuss generalizability and limitations, keeps your argument honest and defensible.