Root-mean-square
(Redirected from Root-mean square)
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
This article is a stub. Help us out by expanding it.