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root mean square

noun, Mathematics
1.
the square root of the arithmetic mean of the squares of the numbers in a given set of numbers.
Abbreviation: rms.
Origin
1890-1895
1890-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for root mean square
  • The root mean square error of approximation values was robust in the presence of kurtosis for the elliptical estimation methods.
British Dictionary definitions for root mean square

root mean square

noun
1.
the square root of the average of the squares of a set of numbers or quantities: the root mean square of 1, 2, and 4 is √[(1² + 2² + 4²)/3] = √7, rms
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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