In collective or multiple case studies, a variety of cases are carefully selected. This features the advantage of allowing for comparisons to become created across quite a few cases and/or replication. Choosing a "usual" case may perhaps allow the findings to generally be generalised to theory (i.e. analytical generalisation) https://brooksvforb.theblogfairy.com/29179281/getting-my-find-someone-to-do-case-study-to-work