Measurements Flashcards
1
Q
Systemic error
A
Causes measurements to have a constant magnitude above or below the true value of the measured quantity
2
Q
Random error
A
Causes measurements to be varying, have an equal chance of being above or below true value of the measured quantity
3
Q
Accruacy
A
How closely a measured value agrees with the “true” value
4
Q
Absolute uncertainty
A
∆x
5
Q
Fractional uncertainty
A
(∆x)/x
6
Q
Percentage uncertainty
A
[∆x/x]/100%
7
Q
Fractional uncertainty for z=x^n
A
Ln(∆x/x)
8
Q
Fractional uncertainty for multiplication and division
A
(∆z/z) = (∆x/x) + (∆y/y)
9
Q
Precision
A
Refers to how closely individual measurements agree with each other without reference to any ‘true’ value
10
Q
What are the SI base units?
A
Kilogram
Metre
Second
Kelvin
Ampere
Mole
Candela
