Accuracy and precision both concern the quality of a measure. However, the terms have different meanings and should not be used as substitutes for one another. Precision depends on the unit used to obtain a measure. The smaller the unit, the more...

Accuracy is the closeness of an experimental measurement to the "true value" (i.e., actual or specified) of a measured quantity. A "true value" can determined by an experienced analytical scientist who performs repeated...

Closeness of the agreement between the result of a measurement and a true value of the measured...

In the fields of science, engineering, industry and statistics, accuracy is the degree of conformity of a measured or calculated quantity to its actual (true) value. Accuracy is closely related to precision, also called reproducibility or repeatability,...

Why do workshops and seminars on subjects such as accuracy and precision or errors get less response from the profession, as measured by attendance, than subjects such as legal descriptions or boundaries? [ILLUSTRATION OMITTED] I'll admit that the premise of my...

The 2007 Perspectives on Instrumentation column will offer guidance and insight into the use, maintenance and application of liquid handling instruments. Liquid delivery is a common lab process, and this critical function is often overlooked. As a result, routine research and tests results...