unbiased

/ˌən-ˈbī-əst/

adjective

  1. free from bias; especially : free from all prejudice and favoritism : eminently, fair

  2. having an expected value equal to a population parameter being estimated

fair just equitable impartial unbiased dispassionate objective mean free from favor toward either or any side. fair implies a proper balance of conflicting interests. just implies an exact following of a standard of what is right and proper.