Root Mean Square Error = RMSE

Synonym: Root Mean Square Error (RMSE) = Root Mean Square Deviation (RMSD)

A square root of Mean Square Error (MSE) between the datasets of a given variable $\begin{array}{l}x\end{array}$ and its estimator $\begin{array}{l}\hat x\end{array}$ :

(1)	$\begin{array}{l}\displaystyle RMSE(x, \hat x) = \sqrt{MSE(x, \hat x) }\end{array}$

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Root Mean Square Error = RMSE