The original closed-ticket hours sum to 16 across four tickets, so the mean is 4. North averages 3 and South 5. Closure rate is 4/6; it must not be confused with the proportion of all elapsed hours spent on closed tickets.

Critical check: Closed-ticket measures exclude open rows and all cards reconcile under team filters.

Final project: Deliver the PBIX, CSV, measure definitions, model note and filter/refresh evidence. A reviewer should reproduce both the six-row baseline and seventh-ticket scenario without paid cloud publishing.