In collective or various case studies, a variety of cases are diligently selected. This presents the advantage of permitting comparisons being made across various cases and/or replication. Picking a "usual" case may well enable the findings being generalised to theory (i.e. analytical generalisation) or to check theory by replicating https://rafaeldtppu.answerblogs.com/29078382/about-hbr-case-study-analysis