Free practice · numeric · medium
Practice
Count tickets in the middle response band
Response times are 8, 24, 25, 48, and 49 hours. How many are over 24 through 48 hours?
Population contract
Every filter must be explicit enough to reproduce
- Region
- Northeast
- Status
- Completed under one approved definition
- Window
- >= Aug 1 and < Sep 1, 2026
- Measure
- Sum completed-order revenue in USD
Closed-open time boundaries prevent overlap at midnight, while a filter waterfall keeps denominator changes visible.