Talk:Relative standard deviation
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The notation rsd[edit]
The disambiguation page RSD lists rsd as the (supposedly) single abbreviation or notation for relative standard deviation, but the actual article does not, listing RSD and %RSD instead. JöG (talk) 12:14, 27 March 2008 (UTC)
Isn't this the same as "coefficient of variation"?[edit]
Coefficient of variation is SD / mean. SD is always positive. Most measured quantities are positive. So coefficient of variation is mostly posistive anyway. If I understand this correctly Relative standard deviation is different from the coefficient of variation in the rare case when a quantitz of negative mean is measured. If so, then I believe this had to be made clear in the article. -- GB 194.82.50.2 (talk) 10:37, 7 July 2010 (UTC)