Estimation of measurement uncertainty in chemical analysis

Self-test 1

Now you have acquired the knowledge and understanding of the most basic concepts related to measurement uncertainty. The following test enables you to test your understanding.

 

Which of the following statements are true? Which of the listed differences between uncertainty and error are correct?

1. Measurement uncertainty defines an interval around the measured value within which the true value lies with some probability.

2. Measured value can be corrected by subtracting measurement uncertainty from it.

3. A measured value can be regarded as an estimate of the true value.

4. If a measurement result has uncertainty then it means that the measurement was not performed correctly.

5. Which of the listed differences between uncertainty and error are correct?

6. Measurement uncertainty characterizes the accuracy of the measurement result.


 

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