Final answer:
A legal agreement for a police agency to resolve patterns of biased policing is known as a Consent Decree, which is a court-ordered agreement that mandates reform within the department.
Step-by-step explanation:
A legal agreement whereby a police agency with a pattern or practice of biased policing agrees to make changes is commonly known as a Consent Decree. It is a court-ordered agreement negotiated between the local or federal government and the police department to ensure that the department implements reforms to its practices. Consent decrees are often used to address and remedy patterns of discrimination, excessive force, or other misconduct within law enforcement agencies.