Explanation:

- Graphic Rating Sheet: This method involves rating employees on various parameters using a numerical scale. Each trait or performance measure is scored to evaluate overall performance.

- Critical Incident Method: Focuses on specific events where the employee exhibited effective or ineffective behavior. It records observations but doesn't use a point scale.

- MBO Method: Management by Objectives involves setting specific goals that an employee works to achieve within a set timeframe. It doesn't use a point scale for rating.

- Bell Curve Appraisal: Uses a normal distribution curve to rank employees, but it doesn't specifically rate on a point scale.