eitodennäköisyysotannasta
Eitodennäköisyysotanta, meaning "unlikelihood probability sampling" in Finnish, refers to a survey methodology where the probability of selecting a specific unit into the sample is not predetermined or equal for all units. Instead, the selection process is designed to deliberately include or exclude units based on certain criteria, often related to their perceived likelihood of possessing a particular characteristic or being representative of a specific subpopulation. This contrasts with methods like simple random sampling, where every unit has a known and equal chance of being selected.
The rationale behind eitodennäköisyysotanta can vary. It might be employed to oversample rare populations or events
While eitodennäköisyysotanta can be efficient for certain research goals, it presents challenges in statistical inference. Because