Values in a set of results which are judged not to be part of the variation caused by random uncertainty
Define accuracy
a measurement result is considered accurate if it is judged to be close to the true/acceptable value
define precision
a quality denoting the closeness of agreement between measured values obtained by repeated measurements
define random error
error in a measurement due to small uncontrollable effects
define repeatability
precision obtained when measurement results are produced in one laboratory, by a single operator using the same conditions over a short timescale. repeats with the same equipment, method and experimenter giving similar results
Define reproducibility
precision obtained when measurement results are produced by different laboratories and therefore by different operators using different pieces of equipment. results can be produced by different groups equipment or methods. If the results are similar they are reproducible
What is resolution
aparatus with a higher resolution will give readings with more decimal places
What is systematic error
error due to the measured value differing from the true value by the same amount each time
What is uncertainty
interval within which the true value can be expected to lie with a given level of confidence or probability
