Measure a spread
A range describes these observations; it is not measurement uncertainty or a confidence interval.
Physics
Start a physics problem by naming the measured quantity and its unit.
In practice
Convert the duration before comparing observations recorded in minutes and seconds. Then check whether the start and end events were defined consistently.
A numerical match can still describe different events; keep the measurement method beside the result.
Measurements
Convert a duration
Use a consistent start and end event when comparing timed observations.