Free practice · numeric · medium
Practice
Calculate a traced resolution-time mean
A support workflow validates [12, 15, 9], totals all three resolution times, counts all three items, and divides total by count. What mean does it report?
Northstar support-time trace
The reported mean comes from one checked total and count
- Resolution times
- 12, 15, and 9 minutes
- Starting state
- total = 0, count = 0
- Update rule
- Add the time and increase count once
- Final operation
- Divide checked total by checked count
Trace the accumulator and counter across all three inputs, then perform one division after the loop finishes.