any systematic error in the design, conduct or analysis of a study which results in estimates which depart from true values. An unbiased study is free from systematic error. Many types of bias have been named, but three general types can be identified, selection bias, information bias and confounding.
http://medical-dictionary.thefreedictionary.com/bias
a particular tendency, trend, inclination, feeling, or opinion, especially one that is preconceived or unreasoned: illegal bias against older job applicants; the magazine’s bias toward art rather than photography; our strong bias in favor of the idea.
http://www.dictionary.com/browse/biases
What Is Bias? A bias is a tendency. Most biases—like the preference to eat food instead of paper clips—are helpful. But cognitive shortcuts can cause problems when we're not aware of them and apply them inappropriately, leading to rash decisions or discriminatory practices.
https://www.psychologytoday.com/basics/bias
Example: A bias towards male doctors. 2. (verb) The act of showing a bias. Example: Judging a group negatively because of their ethnicity or not accounting for students with disabilities when designing a test. 3. (verb) To influence in some way. Example: Framing a question on survey to ensure a desired response.
http://sociologydictionary.org/bias/
Historical Examples. 1  biases that had held one another in check now, temporarily at least, reinforce one another, and constitute a unified attitude. Human Nature and Conduct John Dewey. 2  The biases are all right; the sleeves will want altering, Miss Scudder. The Minister's Wooing Harriet Beecher Stowe.
http://www.dictionary.com/browse/biases
There can be many kinds of bias; some may be caused by the sampling process, but bias can be caused by other factors. 4 (in electronics) a voltage applied to an electronic device, such as a vacuum tube or a transistor, to control operating limits. See also detection bias.
http://medical-dictionary.thefreedictionary.com/bias
a particular tendency, trend, inclination, feeling, or opinion, especially one that is preconceived or unreasoned: illegal bias against older job applicants; the magazine’s bias toward art rather than photography; our strong bias in favor of the idea.
http://www.dictionary.com/browse/bias
The judge was not supposed to have a personal bias in the court case over which he presided; if it became known of his hatred for people who hurt puppies, the animal abuse case would end in a mistrial.
http://www.businessdictionary.com/definition/bias.html
verb (used with object), biased, biasing or (especially British) biassed, biassing. 10. to cause to hold or exhibit a particular bias; to influence, especially unfairly: a tearful plea designed to bias the jury; a survey biased toward highly educated people.
http://www.dictionary.com/browse/bias
An inclination or preference that influences judgment from being balanced or even-handed. Prejudice is bias in pejorative sense. 2. Statistics: A systemic inaccuracy in data due to the characteristics of the process employed in the creation, collection, manipulation, and presentation of data, or due to faulty sample design of the estimating technique.
http://www.businessdictionary.com/definition/bias.html
biases definition
Bias is an inclination or preference that influences judgment from being balanced or even-handed. A bias is defined as an inclination or preference that influences judgment from being balanced or even handed.