What is the name for(a^2 + b^2 + c^2 +...)/(a + b + c +...)? - MathOverflow [closed]most recent 30 from http://mathoverflow.net2013-05-25T18:36:47Zhttp://mathoverflow.net/feeds/question/47738http://www.creativecommons.org/licenses/by-nc/2.5/rdfhttp://mathoverflow.net/questions/47738/what-is-the-name-fora2-b2-c2-a-b-cWhat is the name for(a^2 + b^2 + c^2 +...)/(a + b + c +...)?tdnoe2010-11-30T00:24:55Z2010-11-30T11:08:41Z
<p>That is, the sum of squares of some numbers divided by the sum of the numbers. The term "anti-harmonic mean" has been coined for this quantity. I'm hoping there is a better name.</p>