Problem
After reading the attached case article, write a paragraph as case summary, and then respond to the following questions:
1) What are the two characteristics that the identified categories in nominal scales must have? Explain it detail with examples.
2) Why is the operationalization of variables at a higher level of measurement beneficial to researchers?
3) What is the relationship between lower and higher-level measurements?
4) In your opinion, are the criticisms of Stevens' typology of measurement scales suggested by the authors meaningful? Explain it in brief.