Discuss the rating errors that Brenda must be aware of and how these can be avoided.

Brenda Jackson, a newly hired human resources manager, has been on the job for approximately six months and is in the process of trying to create a new performance appraisal system for her employer, Starbrite Manufacturing Systems. Brenda has reviewed the company's current employee files and has noted that no formal perforn1ance appraisals exist in the files. This situation is of great concern to Brenda.