Estimation of measurement uncertainty in chemical analysis

Self-test 8

Here you can test whether you have correctly understood the main differences between the different approaches for measurement uncertainty estimation.

1. Which of the following is true?

The ISO GUM modeling approach uses the measurement model but not the data from your laboratory.

The single-lab validation approach uses essentially two types of data: within-lab long-term reproducibility and lab bias.

The interlaboratory approaches do not need to use any data from your laboratory at all.

The single-lab validation approach of measurement uncertainty estimation is a based on the measurement model.

The ISO GUM modeling approach enables calculating measurement uncertainty that is related to the particular measurement result.

If using the ISO GUM measurement uncertainty estimation approach some important uncertainty sources are left out of consideration then overestimated uncertainties are obtained.