measurements Flashcards
1
Q
Scalar Quantities
measurements
A
represented by a magnitude only
2
Q
Vector Quantities
measurements
A
represented by magnitude & direction
3
Q
Systematic Error
measurements
A
leads to readings that are consistently more/less than the true value
eg. zero error
4
Q
Random Error
measurements
A
gives rise to a scatter of readings about a mean value
eg. parallax error
5
Q
Accuracy
measurements
A
a measure of how close a reading / the average of a set of readings is to the true value
6
Q
Precision
measurements
A
a measure of how small the spread of repeated readings about the average value
7
Q
r.m.s definition
A
the square root of the mean of the squared values
