Uncertainty Flashcards
1
Q
what factors effect certainty
A
- instrument resolution
- manufacturers tolerance of the instrument
- human judgement
- how many repeats
2
Q
readings
A
only require one human judgement
3
Q
example of reading
A
Thermometer
4
Q
measurements
A
require two human judgements
5
Q
example of measurements
A
ruler
6
Q
what is the uncertainty of an instrument ?
A
+ or - half the resolution of the instrument
7
Q
how can you reduce uncertainty ?
A
taking repeat measurements and calculating a mean
