Definition:Error Mean Square
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Definition
The error mean square of $S$ is the error sum of squares of $S$ divided by the degrees of freedom of $S$.
Hence the error mean square is an unbiased estimator of variance of error.
Also see
- Results about the error mean square can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): error mean square
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): error mean square