Why 2016 election polls missed their mark
Cellphone Activity Flags
Oversampling is used to study small groups, not bias poll results
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5 key things to know about the margin of error in election polls
Why Pew Research Center Changed Its Strategy This Election
Text Message Notification for Web Surveys
Research in the Crowdsourcing Age, a Case Study
Data Quality Deserves an Honest Discussion
Measuring illegal immigration: How Pew Research Center counts unauthorized immigrants in the U.S.
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