A number characterising Statistical metric characterizing the model prediction quality ( goodness of fit ) between the datasets of a given variable variable
and its estimator LaTeX Math Inline body x
:LaTeX Math Inline body \hat x
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MSE(x, \hat x) = \frac{1}{n} \sum_{i=1}^n (x_i - \hat x_i)^2 |
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There are many normalized measures of prediction quality which are more comfortable for computations, with Coefficient of determination (R2) being the most popular.
See also
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Formal science / Mathematics / Statistics / Statistical Metric
[ Root Mean Square Error (RMSE) ] [ Coefficient of determination (R2) ]
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