- not biased or prejudiced; fair; impartial.
- having no bias or prejudice; fair or impartial
- statistics
- (of a sample) not affected by any extraneous factors, conflated variables, or selectivity which influence its distribution; random
- (of an estimator) having an expected value equal to the parameter being estimated; having zero bias
- (of a significance test). Having a power greater than the predetermined significance level
