The method of comparing each pair is considered valuable and easy to make in the team of the group, But very difficult to do when there are between 10-15 employees, because of the folder comparison too much makes the comparison difficult. In addition, this method only allows comparison of the employees in the same group at work. The arrangement is also very sensitive to mistakes in reviews, mainly because indicators about the effectiveness of work rarely are clearly identified. Sometimes, we have to distinguish the employees when that effect their work quite the same.
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