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Quiz 2 Ch. 6

Terms in this set (25)

unit nonresponse
failure is complete, the person chosen for the sample refused to cooperate with the survey request entirely
item nonresponse
failure affects only one item in the survey
nonresponse bias
occurs in statistical surveys if the answers of respondents differ from the potential answers of those who did not answer
response propensity
the theoretical probability that a sampled person (or unit) will become a respondent in a specified survey
nonignorable nonresponse
Y itself is a cause of response propensity
maintaining interaction
continue to interact with the respondent
tailoring
make it a certain way
unit nonresponse
total failure to obtain measurements on sample unit
item nonresponse
failure to obtain an answer for one item in survey
response rate
percentage of eligible sample cases that were measured
nonresponse rate
percentage of eligible sample cases that are nonrespondent (complement of response rate)
nonresponse bias
when the difference in sample estimates due to different values between respondents and non respondents is SYSTEMATIC (endemic to all implementation of the survey design)
refusal rates
R/(I + R)
refusal conversion rates
initial refusals that were subsequently interviewed
coverage rates
proportion of total population measured accounted for by respondent units
compound rates
nonresponse rates at different survey levels (e.g., schools and students within schools)
"opportunity cost" hypotheses
busy people disproportionately refuse to be interviewed because the cost of spending time away from other pursuits is more burdensome than for others
"social isolation" hypotheses
people who feel lack of social support or membership in larger community refuse requests from major institutions
"topic of interest" hypotheses
people interested in topic may disproportionately respond and thus influence key statistics
"Oversurveying" hypotheses
fatigue from survey requests
"leverage-salience" theory
different persons place different importance on feature of the survey request
leverage
the value potential subject places on a particular attribute of the interview request
salience
how important the attribute is in the description of the request
disposition
final status of all sampled cases
non-respondents
eligible cases that are not interviewed
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