To continue with the topic of "Bad Surveys", here is an example of bad survey question. This survey was taken from the University of Minnesota umn myU homepage.
According to the survey it is physically impossible to have 5 finals.
This single question survey has poor question formatting. This is an example of an error of categories not being mutually exclusive/exhaustive. It is a closed question, forcing respondents to choose one of the offered responses. The problem is that the choices are not fully inclusive. They survey goes straight from "4" to "more than 5", excluding the option so simply choose 5.
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