At the end of the term, university and college students often complete questionnaires about their courses. Suppose that in one university, students were asked the following.
a. Rate the course (highly relevant, relevant, irrelevant)
b. Rate the professor (very effective, effective, not too effective, not at all effective)
c. What was your midterm grade (A, B, C, D, F)?
Determine the type of data each question produces.