# Accurate measurement of small electric charges by a null method (classic reprint) - Accurate measurement of pressure | SpringerLink

In simplest terms, given a set of data points from repeated measurements of the same quantity, the set can be said to be * precise* if the values are close to each other, while the set can be said to be * accurate* if their average is close to the * true value* of the quantity being measured. The two concepts are independent of each other, so a particular set of data can be said to be either accurate, or precise, or both, or neither.

In the fields of science and engineering , the accuracy of a measurement system is the degree of closeness of measurements of a quantity to that quantity's true value . [1] The precision of a measurement system, related to reproducibility and repeatability , is the degree to which repeated measurements under unchanged conditions show the same results . [1] [2] Although the two words precision and accuracy can be synonymous in colloquial use, they are deliberately contrasted in the context of the scientific method .

Interestingly, the field of statistics , where the interpretation of measurements plays a central role, prefers to use the terms * bias * and * variability * instead of accuracy and precision: bias is the amount of inaccuracy and variability is the amount of imprecision.

Please note that Internet Explorer version 8.x is not supported as of January 1, 2016. Please refer to this blog post for more information.

In simplest terms, given a set of data points from repeated measurements of the same quantity, the set can be said to be * precise* if the values are close to each other, while the set can be said to be * accurate* if their average is close to the * true value* of the quantity being measured. The two concepts are independent of each other, so a particular set of data can be said to be either accurate, or precise, or both, or neither.

In the fields of science and engineering , the accuracy of a measurement system is the degree of closeness of measurements of a quantity to that quantity's true value . [1] The precision of a measurement system, related to reproducibility and repeatability , is the degree to which repeated measurements under unchanged conditions show the same results . [1] [2] Although the two words precision and accuracy can be synonymous in colloquial use, they are deliberately contrasted in the context of the scientific method .

Interestingly, the field of statistics , where the interpretation of measurements plays a central role, prefers to use the terms * bias * and * variability * instead of accuracy and precision: bias is the amount of inaccuracy and variability is the amount of imprecision.