quadratic mean

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English[edit]

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Etymology[edit]

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

Noun[edit]

quadratic mean (plural quadratic means)

  1. (mathematics) A type of average, calculated as the square root of the mean of the squares, ie. Q = \sqrt { x_1^2 + x_2^2 + ... + x_n^2 \over n }.

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