measurement properties and terminology

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The properties to be considered in relation to any measurement are accuracy, precision, reliability, repeatability, reproducibility, and validity. Accuracy and precision are often confused but are distinct and different. Accuracy means the degree to which a measurement or estimate represents the true value of the attribute being measured, whereas precision is the degree of detail in the measurement. Reliability means dependability; and repeatability or reproducibility refers to the closeness with which a sequence of measurements of the same entity agree with each other.

Subjects: Public Health and Epidemiology.

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