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Table of Contents Multivariate Data Basic Knowledge Biased Estimator | |
See also: parameters |
An biased estimator is one which delivers an estimate which is consistently
different from the parameter to be estimated. In a more formal definition
we can define that the expectation E of a biased estimator is not equal
to the parameter. In principle we can differentiate between two types of
bias:
Note that an unbiased statistic is not necessarily an accurate statistic.
If the variance of a statistic is high it can still be unbiased.
Last Update: 2006-Jän-17