Bias (noun)

1. A tendency to present or hold a partial perspective at the expense of (possibly equally valid) alternatives.
2. An inclination or prejudice for or against one person or group, especially in a way considered to be unfair.
3. A systematic error or deviation from the truth in scientific measurements or results.

Origin:

Late middle english: from old french biais, from biais "oblique, slanting", from biais "on one side", based on latin bis "twice".

Examples:

1. The media has been accused of bias in its coverage of the election.
2. His decision was influenced by bias against people with tattoos.
3. The study had a bias towards participants who were already in good health.
4. She had a bias for action and always pushed for quick decisions.
5. The survey had a bias towards urban areas and did not accurately reflect the rural population.