To show the influence of the accuracy and precision
for each pach CIE XYZ values, CIE L*a*b* values, and colorimetric difference between referent mean value and mean values of tested measuring devices were calculated.
All these activities address the accuracy and precision
of their measurements, allowing the reader to have relative confidence in the study findings.
As an example of the importance of accuracy and precision
, in January of this year, the US FDA sent out over 1,000 letters to drug product owners regarding a "lack of assay reproducibility between original and repeat results," and in a related warning letter stated that because of lack of reproducibility "the reported concentration results cannot be considered accurate." The laboratories involved have spent many thousands of hours and tens of millions of dollars responding to this situation.
Thus, where accuracy and precision
are concerned, the more expensive receivers outperformed less expensive receivers.
Accuracy and precision
, however, are prone to error.
Veith's paper gives a very clear account of the problems involved and emphasizes the difference between accuracy and precision
This article focuses on defining and exploring accuracy and precision
, which are fundamental elements of regulatory compliance.
* Nearly all microanalysis instruments give acceptable data accuracy and precision
on selected samples
Ratiometric photometry offers both enhanced accuracy and precision
in comparison to single-dye photometric methods.