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based on an earlier version of the Wolfram Language.
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RootMeanSquare

RootMeanSquare[list]
gives the root mean square of values in list.
  • For the list {x1, x2, ..., xn}, the root mean square is given by .
  • RootMeanSquare[{{x1, y1, ...}, {x2, y2, ...}, ...}] gives {RootMeanSquare[{x1, x2, ...}], RootMeanSquare[{y1, y2, ...}]}.
New in 6