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Surveys are subject to two types of error, sampling error and nonsampling error. Because the Census of Governments covers all governments, there is no sampling error. However, the data are subject to nonsampling error, which includes all other sources of survey error such as nonresponse, incorrect reporting, coverage, misclassification of governments, and inaccurate coding of data.
A variety of procedures were applied to keep nonsampling errors to a minimum, including the following:
The final response rate for the GUS was 75.0 percent with 38.4 percent of the responding units responding via web, 57.5 percent responding via paper, and 4.2 percent responding via some other means.
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