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A polling firm is conducting research on Internet use by calling the landline telephone of every tenth person listed in a local phone book. What bias may exist in the method they are using to do the poll?
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Mar 3, 2019
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A polling firm is conducting research on Internet use by calling the landline telephone of every tenth person listed in a local phone book. What bias may exist in the method they are using to do the poll?
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StatBeginner
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Younger people don't own landline telephones so you are limiting your voter demographic to older people by calling them more than younger people.
Sangbok Lee
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Mar 8, 2019
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