There are 15 animal keepers working for the XYZ Company. The…

There are 15 animal keepers working for the XYZ Company. Their supervisor is required to rate the performance of these workers based on the following criteria: 30% of the animal keepers will be rated as below-average, 40% of the animal keepers will be rated as average, and 30% of the animal keepers will be rated as above average. What type of performance appraisal is used?