Discuss each of the following performance appraisal methods:
1. Management by objectives (MBO)
2. Multi-rater assessment (or 360 degree feedback)
3. Graphic rating scale
4. Behaviorally anchored rating scale (BARS)
5. Critical-incident appraisal
6. Eassay appraisal
7. Checklist
8. Forced-choice rating
9. Ranking methods
10. Work standards approach