Uncertainties Flashcards
1
Q
Digital
A
+/- 1 of smallest unit shown
2
Q
Analog (scale, graduated cylinder)
A
+/- 5 of estimated digit (ex: cyl has 1 mL ticks, est to .1 mL, uncert of +/- .5 mL)
3
Q
Absolute uncertainty
A
numerical value of error
4
Q
Relative uncertainty
A
percent error (comparison between absolute error and measurement
5
Q
Human reaction time
A
.3 seconds
6
Q
Error analysis
A
(value-accepted value)/accepted value (% diff from “real” science)
7
Q
Absolute uncertainty (calc)
A
(highest possible value-lowest possible value)/2
8
Q
Uncertainty when adding/subtracting
A
Add absolute uncertainties
9
Q
Uncertainty when multiplying/dividing
A
Add relative uncertainties, apply to answer
