úrtaksviðmið
Úrtaksviðmið, often translated as sampling criteria or sampling frame, refers to the defined set of individuals or elements from which a sample is to be drawn in a research study. It is a crucial component of the sampling process, ensuring that the sample is representative of the larger population of interest. The úrtaksviðmið specifies the characteristics that define eligibility for inclusion in the sample and may also outline specific exclusion criteria. A well-defined úrtaksviðmið is essential for the validity and generalizability of research findings. If the úrtaksviðmið is too narrow, the sample may not accurately reflect the diversity of the target population. Conversely, if it is too broad, it may include individuals who are not relevant to the research question, potentially introducing bias. The process of establishing the úrtaksviðmið typically involves clearly identifying the population to be studied and then developing specific rules for who qualifies to be part of the sample. This ensures that the selection of participants or elements is systematic and aligned with the research objectives.