The Challenge of Surveying ‘hard to Reach’ Groups
نویسندگان
چکیده
The basic premise of a probability sample is that the sample will represent the universe or target population. To achieve that goal, pertinent information about each sample unit should be obtained. When some groups are not included, representation of the universe within the sample is brought into question. So, one goal of survey research is to maximise the probability of obtaining information about each sample unit.
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