All 3 Uses

bias
in
Sense and Sensibility
(Auto-generated)

His temper might perhaps be a little soured by finding, like many others of his sex, that through some unaccountable bias in favour of beauty, he was the husband of a very silly woman,—but she knew that this kind of blunder was too common for any sensible man to be lastingly hurt by it.†
Chpt 20 *

bias = a personal preference; or any tendency to move in a particular direction
If you could be supposed to be biased in any respect by your own feelings, your opinion would not be worth having.†
Chpt 24

biased = created a personal preference; or creates a tendency to move in a particular direction
Mrs. Dashwood would have interrupted her instantly with soothing tenderness, had not Elinor, who really wished to hear her sister's unbiased opinion, by an eager sign, engaged her silence.†
Chpt 47

unbiased = without a personal preference; or without any tendency to move in a particular direction

standard prefix: The prefix "un-" in unbiased means not and reverses the meaning of biased. This is the same pattern you see in words like unhappy, unknown, and unlucky.

Definitions:

(1) (bias)
a tendency to favor one side -- in people, a prejudice that affects fair judgment; more generally, any built-in lean to move or behave in a particular way (like a car that pulls right)
(2) (meaning too rare to warrant focus)
Specialized meanings of bias include:
- statistics: any of several errors that distort results
- textiles: a line or fold that is diagonal relative to the sides or grain of the fabric
- electronics: a steady-state current that is forced through an electronic device