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    TV Surveys : Random Sample

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    On TV, surveys are often taken during sensational news stories to determine the people's opinion. Usually, viewers are told to dial a phone number in order to vote yes or no on the issue. These phone numbers sometimes require the caller to pay a fee. Comment on this practice, in terms of sampling practice. Does it produce a random sample? If not, how could it be modified to produce a more random sample? Who is most likely to call these numbers?

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    https://brainmass.com/statistics/tv-surveys-random-sample-38870

    Solution Preview

    If you consider the example of a TV phone in then obviously the people who call the show are the people who feel very strongly about a particular subject. The inclusion of a fee to call also strengthens this effect. Therefore, these samples are not representative of the general population but rather are a self-selecting group.

    For example, a TV survey may say ...

    Solution Summary

    Random sampling and TV surveys are discussed. The solution is detailed and well presented.

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