Bias
From HandWiki
Revision as of 20:26, 4 August 2021 by imported>PolicyEnforcerIA (attribution)
A physical quantity 
is measured using the estimator S, which is a function of the elements 
of a sample, 
. The difference between the expectation value of the estimator, E(S), and the true value of the physical quantity is the bias of the estimator: 
. The estimator is unbiased if 
. For the relation between bias and variance of an estimator, see Bishop95.
 |
