One of the don'ts of questionnaire construction is to ensure that fixed responses do not overlap. Which of the following is the best illustration of a problem that this "don't" might cause?

One of the don'ts of questionnaire construction is to ensure that fixed responses do not overlap. Which of the following is the best illustration of a problem that this "don't" might cause?



a. A question has three possible responses: yes, no, or maybe.
b. An income question asks for an income designation in one of the following income categories: $0-$20,000, $20,000-$40,000, or $40,000 and above.
c. A consumer is asked to describe a recent event while driving.
d. A consumer must describe a cartoon about buying a car.
e. A consumer is asked whether or not he or she could spy on another consumer's shopping experience.


Answer: b


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