WCensus
WComputer-assisted survey information collection
WCoverage error
WData collection
WDaytime population
WGender survey question
WGroup concept mapping
WInstructional manipulation check
WInterview
WInterview (research)
WLikert scale
WOfficial statistics
WOpinion poll
WResponse bias
WResponse rate (survey)
WSampling (statistics)
WSemantic differential
WWorld Association for Public Opinion Research