Ignorable Nonresponse
Researchers who use survey data often assume that nonresponse (either unit or item nonresponse) in the survey is ignorable. That is, data that are gathered from responders to the survey are often used to make inferences about a more general population. This implies that the units with missing or incomplete data are a random subsample of the original sample and do not differ from the population at large in any appreciable (i.e. meaningful and nonignorable) way. By definition, if nonresponse is ignorable for certain variables, then it does not contribute to bias in the estimates of those variables.
Because nonresponse error (bias) is a function of both the nonresponse rate and the difference between respondents and nonrespondents on the statistic of interest, it is possible for ...
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Reader's Guide
Ethical Issues In Survey Research
Measurement - Interviewer
Measurement - Mode
Measurement - Questionnaire
Measurement - Respondent
Measurement - Miscellaneous
Nonresponse - Item-Level
Nonresponse - Outcome Codes And Rates
Nonresponse - Unit-Level
Operations - General
Operations - In-Person Surveys
Operations - Interviewer-Administered Surveys
Operations - Mall Surveys
Operations - Telephone Surveys
Political And Election Polling
Public Opinion
Sampling, Coverage, And Weighting
Survey Industry
Survey Statistics
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