Survey Sampling
Survey sampling is a procedure of selecting prospective respondents for a survey experiment.
Contents
Frames
Survey sampling begins with identification of the frame. A properly-specified frame covers the complete true population. An improperly-specified frame introduces sampling error.
Non-probability Panel
A non-probability panel is a stream of potential respondents that is different from the true population, and for which there is no known probability of selection. This type of panel poses important challenges to the model of survey inference, but it is also much cheaper to collect data in this manner.
The probability of selection is not known so the base survey weight is simply 1.
Census
A census is a survey of the complete true population. The probability of selection is 1, so the base survey weight is also 1.