a measure is valid if it measures what is it supposed to be measuring and if all the control variables have been controlled
1 of 10
true value
the value that would have been obtained in an ideal measurement- with the exception of a fundamental constant the true value is considered unknowable
2 of 10
precision
the closeness of of agreement (consistency) between values, obtained by repeated measurement
3 of 10
accuracy
if it is judged to be close to the true value
4 of 10
repeatability
the precision obtained when measurement results are obtained by a second operator using the same method
5 of 10
repreducability
when the same results are obtained by people using different apparatus
6 of 10
uncertainty
the interval within which the true value can be considered to lie within a given level of confidence or probability
7 of 10
error
the difference between the measurement result and the true value if a true value is thought to exist. can be due to systematic and random errors of an unknown size
8 of 10
resolution
the smallest measuring interval and the source of uncertainty in a single reading
9 of 10
significant figures
the number of significant figures used depends on the resolution of equipment used
10 of 10
Other cards in this set
Card 2
Front
the value that would have been obtained in an ideal measurement- with the exception of a fundamental constant the true value is considered unknowable
Back
true value
Card 3
Front
the closeness of of agreement (consistency) between values, obtained by repeated measurement
Back
Card 4
Front
if it is judged to be close to the true value
Back
Card 5
Front
the precision obtained when measurement results are obtained by a second operator using the same method
Comments
No comments have yet been made