Topic 11 - Measurement and data processing Flashcards
1
Q
What is the difference between precise and accurate measurements?
A
Precise measurements have small random errors and are reproducible in repeated trials.
Accurate measurements have small systematic errors and give a result close to the accepted value
2
Q
How can random uncertainties be reduced?
A
By repeating readings
(doesn’t work with systematic errors)
3
Q
How is percentage uncertainty calculated?
A
4
Q
How is percentage error calculated?
A
5
Q
What is the difference between the independent and the dependent variable?
A
The independent variable is the cause and is plotted on the horizontal (x) axis.
The dependent variable is the effect and is plotted on the vertical (y) axis
6
Q
How can the gradient of the line on a graph be calculated?
A
