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Is there a mathematical term for the ratio of arithmetic mean to the root mean square average?

(FWIW, in the context where I'm concerned about this the component values will always be >= 0.)

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The nearest thing I can think of (but it is not quite there!) is the signal to noise ratio. The reciprocal is called the Coefficient of Variation, and a few other names. The article has a link to SNR.

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    +1 as the question immediately made me think of BEE in Navy ET school during the communications phase. *Sorry, nothing more or better to contribute.*2013-10-29