Root-mean-square
(Redirected from Quadratic mean)
The root-mean-square or quadratic mean of a collection of real numbers is defined to be . This is the second power mean of the .
It is so-named because it is the square root of the mean of the squares of the .
It is also part of the well-known Root-Mean Square-Arithmetic Mean-Geometric Mean-Harmonic mean Inequality
See Also
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