Agree or disagree with this statement: Landline and mobile-phone surveys are essentially the same and can be used in the same situations with the same results.
Answer to relevant QuestionsWhat are the advantages and disadvantages of e-mail surveys? What are situations when they may not be appropriate? What is self-selection bias? Describe it as a source of total survey error. A sample of 14-year-old schoolchildren is asked if they have ever smoked a cigarette. The students are asked to respond orally in the presence of other students. What types of error might enter into this process? What are the major types of mechanical observation? What types of observations might Twitter potentially have access to that would be of interest to basic marketing researchers? What is the difference between direct and contrived observation?
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