Non response error exists to the extent that those who did respond to your survey are different from those who did not on (one of the)characteristics of interest in your study.

Question

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Non response error occurs when there is a difference between those who responded to a survey and those who did not on a characteristic that is important to the study. This affects the generalizability of the results and can lead to biased conclusions.

Non Response Error Exists to the Extent That Those Who