16 Questions
What does accuracy refer to in the context of measurement?
The degree to which the result of a measurement conforms to the correct value or a standard
Which term refers to the quality of being exact and how close two or more measurements are to each other?
Precision
What are systematic errors in experimental observations primarily attributed to?
Inaccuracy inherent in the system
What do random errors in experimental measurements result from?
Unknown and unpredictable changes in the experiment
What does precision refer to in the context of measurement?
The quality of being exact and how close two or more measurements are to each other
What does limits of detection (LOD) refer to in the context of measurement?
The lowest concentration of the analyte that can be reliably detected and quantified
What is the main cause of random errors in an experiment?
Electronic noise in the circuit of an electrical instrument
Which type of error can be replicated by repeating the experiment again?
Systematic errors
What is the purpose of a reference standard in calibration?
To test the identity, strength, quality, and purity of substances
What are Certified Reference Materials (CRMs) used for?
All of the above
When is calibration typically required?
All of the above
What is the goal of calibration?
To quantify and control errors or uncertainties within measurement processes
What are Systematic errors usually caused by?
Measuring instruments that are incorrectly calibrated
What is a working standard used for?
A standard that is qualified against and used instead of the reference standard
Which of the following is most suitable to test the identity, strength, quality, and purity of substances for Chemical, pharmaceutical, and medicinal products?
Reference standards
What is the comparison of measurement values delivered by a device under test with those of a calibration standard known as?
Calibration traceability
Test your understanding of accuracy, precision, and limits of detection (LOD) in the context of instrumentation. This quiz covers the definitions and applications of accuracy, precision, and LOD in measurements and calculations.
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