Examlex
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Cluster Samples
A sampling technique where the population is divided into groups, or clusters, and a random sample of these groups is selected to be surveyed or studied.
Target Population
The entire group about which a researcher wishes to make conclusions based on a statistical study.
Exclusion Bias
A systematic error that occurs when certain groups or individuals are left out of the sample, leading to biased results.
Interviewer Training
The process of educating interviewers on conducting interviews effectively, including question phrasing, unbiased data collection, and interacting with respondents.
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