What is a sampling frame?

The sampling frame is a list of all eligible members of the population from which the samples are drawn. This can be considered a pool from which samples are obtained. It is a statistical framework used in surveys, social research, marketing research and various types of studies. This frame is necessary to achieve an impartial, precise conclusion or finding, as it defines a completely studied population. Normally, it is not possible or even practical to make direct observations of each element in the interest and the frame limits the studied population to a manageable figure, which ultimately helps scientists draw conclusions about the entire population. Some parameters are introduced to reduce the population. The sampling framework in this case can determine that the teenager lives in new and eyebrows, to be aged 13 to 15 years, has access to a computer at home and attends a public school. A study conducted in this way may hope that in this segment will bring knowledge that generally relate to teenagers in this segment. Determination of a clear frameworkIt is decisive for the success of any survey or study because the defective framework leads to inconsistent or inaccurate findings or results.

Although the frame narrows through the pool from which the sample is drawn, it differs to some extent from the population of interest. For example, using the above example, the sampling framework does not include teenagers who get to the website from their mobile phone, who are not at home at the time of the call, or who are simply not interested in participating in surveys. Even getting into the sampling frame does not ensure that a person becomes part of the final sample group. The samples can be removed randomly from a frame where everyer is that they will be included or more systematic, let's say when every decade is selected in the list.

There are many problems that those who develop the sampling frame that can distort the results. Missing members are very commonThe problem where those who have to be within the framework were omitted by accident. Duplicate members are also a major problem where the member is listed more than once. Sometimes there are foreign records - people who do not represent an interesting population - can be found within. At other times, instead of being stated, the frame may contain groups. If there are errors in sampling, the final sample is defective, either as a sample that does not represent the studied group or contains significant distortion.