3.1.2 - Random And Systematic Errors Flashcards
1
Q
Examples of sources of random errors?
A
- observer being less than perfect.
- the readability of the equipment.
- external effects on the observed item.
2
Q
How can we remember what a random error is?
A
They are a one off.
3
Q
Examples of sources of systematic errors include?
A
- the observer being less than perfect in the same way every time.
- an instrument with a zero offset error.
- an instrument that is improperly calibrated.
4
Q
How can we remember what a systematic error is?
A
It occurs the same every time.
5
Q
When are random errors present?
A
When any measurement is made, and cannot be corrected.
6
Q
How can the effect of random errors be reduced?
A
By making more measurements and calculating a new mean.
7
Q
What is the issue with systematic errors?
A
They cannot be dealt with with repeats.
8
Q
How can systematic errors be resolved?
A
The data collection should be repeated using a different technique or a different set of equipment, and the results compared.
9
Q
What may a zero error result in?
A
A systematic uncertainty.
