📒 tending to show favour towards or against one group of people or one opinion for personal reasons; making unfair judgements
biased information/sources/press reports
a biased jury/witness
Their research was based on a biased sample (= a group of people/things containing more of one kind than normal, therefore not giving fair or accurate results).
📒 having a particular interest in one thing more than others
a school biased towards music and art
Managers are naturally biased towards projects showing a quick return.