How might an organization like Pew Research obtain an accurate estimate of the number of cell-phone only households in the first place?
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Details: (1) Give examples of some questions you can ask to evaluate the external validity of a correlational study.
(2)Review the blog: Cell-Phones Only—Whom Should Polls Call and answer the following questions: How might an organization like Pew Research obtain an accurate estimate of the number of cell-phone only households in the first place? What kind of sample would be needed to get this estimate? How would a researcher contact this sample?
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APA
299 words