the 360 degree feedback performance appraisal system tries to improve performance ratings by forcing managers to :

Include information from a wide range of sources in their reviews.

Explanation:

Performance appraisal refers to the evaluation of employees' performance by the human resource managers in an organization. The 360-degree feedback performance appraisal system is a type of performance appraisal that sources information about an employee from various sources, which ranges from subordinates, lateral and supervisory sources. This implies that the manager seeks to gain insight about the employee from his fellow employees, from his supervisors, his subordinates, and sometimes from external sources such as the customers who interact with that employee on a daily basis.

Most managers use this system of appraisal for developmental purposes and evaluation of an employee's performance. Information sourced can then be used to help the employees improve on their skills or promote/demote them.

the answer is i don't know