Vormistamine ülesanne 3
Biemer and Christ discuss
weighting for survey data in detail in Chapter 17.
Finally, nonresponse figures should be clearly reported in surveys. This often takes the form of a
response rate figure. When reporting response rates it is important to state how the response rate
was calculated. For details of response rate calculation and a description of sources of nonresponse,
see the brochure on standard definitions of the American Association for Public Opinion Research
(AAPOR). A regularly updated version and an online response rate calculator can be found on the
AAPOR website (www.aapor.org).
1.4.4 Measurement and Measurement Error
Measurement error is also called error of observation. Measurement errors are associated with the
data collection process itself. There are three main sources of measurement error: the questionnaire,
the respondent, and the method of data collection. When interviewers are used for data collection,
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