Final answer:
Police reports are used for statistical data, contributing to crime statistics like those in the FBI's Uniform Crime Reports and the forthcoming National Incident-Based Reporting System. They can also inform officer performance evaluations.
Step-by-step explanation:
Police reports are primarily used for statistical data. They are a key component in the compilation of crime statistics, such as those published in the FBI's Uniform Crime Reports (UCR). These reports provide comprehensive information from law enforcement agencies and are used to inform discussions on crime prevention and policing strategies. Although they are vital to understanding crime trends, they may not always capture unreported crimes. The National Incident-Based Reporting System (NIBRS) is a more detailed reporting system that states will be required to provide data for, which includes specific information on each crime event.
Additionally, police reports can play a role in officer evaluation and performance assessments. Agencies may utilize information from these reports to gauge an officer's job performance and effectiveness in the field. However, it should be noted that personality tests and other assessments are also used for evaluating and hiring law enforcement personnel.