1 is the number of processes included in the event log. This is always 1. 11,855 is the number of events contained in the event log, the question was how many cases are included in the event log. 12 is the number of event classes ('activities') in the event log, the question was how many cases are included in the event log. 2 is the number of event types (start, complete, schedule, etc.) in the event log, the question was how many cases are included in the event log. 13 is the number of originators (e.g. people or employees) in the event log, the question was how many cases are included in the event log.
This is indeed the number of cases contained in this event log!
Try to understand what the rest of the numbers and charts mean before you continue.
