A case study is a deep detailed study of one single example. A case study of the closure, three case studies, write a case study.
The strength is depth and the weakness is that one example proves nothing on its own. In business schools the case study is the main teaching method, and in medicine it reports a single patient.
1nouncase studyA deep detailed study of one single example.
“The report closes with a case study of a single failed contract.”
case study is a study.
Practised in Academic English