Sampling frame
Sampling frame, in Polish known as „ramka próbkowania”, is a defined list of individuals or items from which a sample is drawn in a research study. It is important for researchers to have a clear and accurate sampling frame in order to ensure that their sample is representative of the population they are studying.
For example, if a researcher is studying the eating habits of college students, the sampling frame would be a list of all college students at a particular university. From this list, the researcher would then randomly select a sample of students to participate in the study.
Having a well-defined sampling frame is essential for reducing bias and ensuring the validity of research findings. It helps researchers to accurately generalize their results to the larger population from which the sample was drawn.
Some common methods for creating a sampling frame include using existing lists, such as voter registration records or customer databases, or constructing a list through random sampling methods, such as systematic sampling or stratified sampling.
By carefully constructing and using a sampling frame, researchers can increase the reliability and accuracy of their research findings.
For more information, you can visit the Wikipedia page on Sampling frame (Ramka próbkowania).