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    Question

    Which survey type is usually biased because those likely to respond have had especially positive or negative experiences with a given product, service, or brand?

    A telephone Correct Answer Incorrect Answer
    B personal interviews Correct Answer Incorrect Answer
    C focus Correct Answer Incorrect Answer
    D mail Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Mail surveys are usually biased because those likely to respond have had especially positive or negative experiences with a given product, service, or brand.

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