Understanding uncertainty is important
To make a good quality measurement and to understand the results. Particularly if you are making the measurements
- as part of a calibration (where uncertainty of measurement must be reported on the certificate);
- for a test (where the uncertainty of measurement is needed to determine a pass or fail;
- to decide whether tolerance is met;
- to read and understand a calibration certificate.
- To know what is the uncertainty in your measurement process and to show you have considered it.
- To know the most important (largest) uncertainties and work to reduce them.
What is NOT a measurement uncertainty?
- Mistakes are not uncertainties
- Tolerances are not uncertainties
- Accuracy (or rather inaccuracy) is not the same as uncertainty
Statistical analysis is not the same as uncertainty analysis.
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