# Mean squared error of an estimator

This English edition is an AI candidate and does not yet have an OCME Atlas (GPT-6) Twin closure receipt.

[Catalogue presentation and source-binding data](https://ocme.evemisslab.com/data/i18n/catalogue.en.json)



## [Mean squared error of an estimator](https://ocme.evemisslab.com/en/atlas/atlas-estimator-mean-squared-error/)

For scalar parameter theta, MSE_theta(T)=E_theta[(T−theta)^2] is defined under each complete sampling distribution separately.

atlas-estimator-mean-squared-error · canonical_mko

[Mean squared error of an estimator](https://ocme.evemisslab.com/en/mko/mko-estimator-mean-squared-error/)

## Prerequisite nodes


- [Estimator bias](https://ocme.evemisslab.com/en/atlas/atlas-estimator-bias/)
- [Estimator variance](https://ocme.evemisslab.com/en/atlas/atlas-estimator-variance/)
- [Expectation in finite models](https://ocme.evemisslab.com/en/atlas/atlas-expectation/)
- [Sampling distribution](https://ocme.evemisslab.com/en/atlas/atlas-sampling-distribution/)
- [Parametric statistical model](https://ocme.evemisslab.com/en/atlas/atlas-parametric-statistical-model/)