measurements and error Flashcards
1
Q
what is precision?
A
in the same place but not near the middle/ repeatable
2
Q
what is accuracy?
A
true/ acceptable value.
3
Q
what is qualitative value?
A
non numerical
4
Q
what is Quantitative value?
A
numerical
5
Q
what is systematic error?
A
the accuracy of the measuring equipment/ off by the same amount
6
Q
what is random error?
A
– the skill and experience of the person using the instrument / all over the place
7
Q
how do you calculate percentage uncertainty?
A
𝑃𝑒𝑟𝑐𝑒𝑛𝑡𝑎𝑔𝑒 𝑈𝑛𝑐𝑒𝑟𝑡𝑎𝑖𝑛𝑡𝑦=
(𝑎𝑏𝑠𝑜𝑙𝑢𝑡𝑒 𝑢𝑛𝑐𝑒𝑟𝑡𝑎𝑖𝑛𝑡𝑦 )/(𝑚𝑒𝑎𝑠𝑢𝑟𝑒𝑚𝑒𝑛𝑡 ) ×100%
8
Q
how do you calculate density?
A
mass/volume
