Grade 12 · Science
Interpret measurement uncertainty practice
Use explicitly defined uncertainty intervals to report measurements without claiming more precision than the method supports.
Opening your practice adventure…
Try a sample
Repeated measurements are tightly grouped around a value known to be wrong because of a zero-offset error. What problem remains?
- No possible error because repeats agree.
- A systematic measurement bias.
- A change in the unit's name.
- A guarantee of perfect accuracy.
See the answer & why
A systematic measurement bias.
Agreement among repeats does not remove a shared calibration offset.
A little hint: Use the stated meaning of ± in this exercise; overlapping intervals alone do not prove equality or a difference.
A teaching tip
Use the stated meaning of ± in this exercise; overlapping intervals alone do not prove equality or a difference.