Choice of Method1. Precision- the closeness of >2 measurements to each other – to measure the ability of researchers using thesame instrument & method2. Reproducibility- the closeness of >2 measurementsperformed in different labs3. Accuracy- the closeness of a measured value to a standard or known value4. Ease, cost, fast, and safety of performing5. Sensitivity- the smallest change in concentration of the analyze that can be detected by using that method