Which factor is important for evaluating the effectiveness of a RADAR system?

The effectiveness of a RADAR system is largely determined by how accurately an operator can interpret the results produced by the RADAR. This interpretation is essential because it directly impacts the ability to make informed decisions based on the data obtained from the RADAR. If the operator has a thorough understanding of the system and is skilled at analyzing the information, they can accurately assess speed, distance, and other critical factors that the RADAR measures. This proficiency contributes to the overall reliability and utility of the RADAR system in real-world applications, such as law enforcement or traffic monitoring.

While other factors like cost, installation methods, and the frequency of device malfunctions are important in their respective contexts, they do not directly influence the primary function of a RADAR system—accurate data interpretation. Thus, operator accuracy stands out as a decisive factor in evaluating the effectiveness of the system.