Rare card
Mean squared error
- Value
- 50 W
- Attack
- 276
- Defence
- 221
- Players
- 0
In statistics, the mean squared error (MSE) or mean squared deviation (MSD) of an estimator (of a procedure for estimating an unobserved quantity) measures the average of the squares of the errors—that is, the average squared difference between the estimated values and the true value.
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