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Concepts of Chapter 12 (Organizing and displaying data (Frequency tables,…

- - - - Jargon should be avoided
        
        No vague or ambiguous questions
        
        Avoid bias and emotional language
        
        Avoid double-barrel questions
        
        No leading questions
        
        Make sure the questions are able to be answered
        
        1 more item...
- - - - Have already been collected by someone else.