Published Online: 15 JUL 2005
Copyright © 2005 John Wiley & Sons, Ltd
Encyclopedia of Biostatistics
How to Cite
Link, W. A. 2005. Unbiasedness. Encyclopedia of Biostatistics. 8.
- Published Online: 15 JUL 2005
Unbiasedness is defined and illustrated as a criterion in estimation and hypothesis testing. Limitations of the criterion are illustrated by examples: that unbiasedness is not transformation invariant, that unbiased estimators need not exist, nor be unique, and that even when a unique unbiased estimator exists, it might be clearly unreasonable.
- hypothesis testing;
- mean squared error;
- optimality criteria;