Estimation of correlated response variance without randomization of interviewer assignments

by Sandra H. Berry


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Interviewer variances are usually small, hard to obtain, and harder to interpret. This paper describes a simple method, not based on randomization of interviewer assignments, for estimating the contribution of interviewers to total survey error. Calculated for data collected by an unusual interviewing staff, it yielded results that were consistent with suspected areas of weakness in the data examined.

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