quadratic mean

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

quadratic mean (plural quadratic means)

1. (mathematics) A type of average, calculated as the square root of the mean of the squares, i.e. ${\displaystyle Q={\sqrt {x_{1}^{2}+x_{2}^{2}+...+x_{n}^{2} \over n}}}$.

• root mean square
• RMS

• (statistics): measure of central tendency
• generalized mean, power mean, Hölder mean

• arithmetic mean
• geometric mean
• harmonic mean