relative standard deviation, sr, σr

https://doi.org/10.1351/goldbook.R05280
The
standard deviation
divided by the mean of the series. It can be calculated with the formula: sr=sx
Sources:
Orange Book, 2nd ed., p. 5 [Terms] [Book]
PAC, 1994, 66, 595. (Nomenclature for the presentation of results of chemical analysis (IUPAC Recommendations 1994)) on page 601 [Terms] [Paper]