How is Standard Deviation and Relative Standard Deviation Calculated?

Dokument-ID

Dokument-ID TE6453

Veröffentlichungsdatum

Veröffentlichungsdatum 27.05.2017
Frage
How is Standard Deviation and Relative Standard Deviation Calculated?
Zusammenfassung
Calculations of standard deviation
Antwort
Standard deviation is a calculation of precision.
Precision measures how well the test results can be reproduced. A series of measurements on the same sample for the same parameter are compared to the average measurement. Remember that it is possible to produce test results with high precision but low accuracy. The most commonly used estimates of precision are the standard deviation (SD) and the relative standard deviation (RSD). RSD also is known as the coefficient of variation (CV).

By definition standard deviation is a quantity calculated to indicate the extent of deviation for a group as a whole.

Please see the attached article for a full calculation series with examples of calculations.
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