Estimator
An estimator is a rule that tells how to calculate an Estimate based on the measurements contained in a sample. Forexample, the ``sample Mean'' Average 
is an estimator for the population Mean 
.
The mean square error of an estimator 
is defined by
Let
be the Bias, then |  |  | |
|  |
where
is the estimator Variance.See also Bias (Estimator), Error, Estimate, k-Statistic- Divisibility Tests
- Divisible
- Division
- Division Algebra
- Division Lemma
- Division Ring
- Divisor
- Divisor Function
- Divisor Theory
- Dixon-Ferrar Formula
- Dixon's Factorization Method
- Dixon's Random Squares Factorization Method
- Dixon's Theorem
- D-Number
- Dobinski's Formula
- Dodecadodecahedron
- Dodecagon
- Dodecagram
- Dodecahedral Conjecture
- Dodecahedral Graph
- Dodecahedral Space
- Dodecahedron
- Dodecahedron 2-Compound
- Dodecahedron-Icosahedron Compound
- Dodecahedron Stellations