Quadratic mean

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Quadratic mean

English

Quadratic in the phrase refers to the squaring on the terms.

((mathematics{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})) A type of average, calculated as the square root of the mean of the squares, ie. <math>Q = \sqrt { x_1^2 + x_2^2 + ... + x_n^2 \over n }</math>.