# Estimator bias

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)



## [Estimator bias](https://ocme.evemisslab.com/en/atlas/atlas-estimator-bias/)

Bias at theta is the estimator expectation under its theta sampling law minus the target parameter; unbiasedness requires zero bias at every theta.

atlas-estimator-bias · canonical_mko

[Estimator bias](https://ocme.evemisslab.com/en/mko/mko-estimator-bias/)

## Prerequisite nodes


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