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Two separate frequency distributions for two variables provide the same information as one joint frequency distribution involving the same two variables.
Q6: Selection bias occurs when the respondent decides
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Q52: Procedures that allow one to analyze scores
Q56: The random variable,number of customers entering a
Q73: The primary purpose of performing a pre-test
Q89: Mail questionnaires typically generate poor response rates.
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Q151: When a survey uses the responses strongly