Xinxing Company went to a university to recruit company employees from fresh graduates, and evaluated the applicants' professional knowledge, English proficiency, participation in social practice and

Xinxing Company went to a university to recruit company employees from fresh graduates, and evaluated the applicants' professional knowledge, English proficiency, participation in social practice and club activities, etc.

Solution: (1) Applicant A has a total score of 86 points; Applicant B has a total score of 82 points; Applicant C has a total score of 81 points; Applicant D has a total score of 82 points;

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(2) The average score of the professional knowledge test of the 4 applicants,

The variance is:

The average score of the English proficiency test of the 4 applicants,

The variance is: ,

The average score of the four candidates participating in social practice and club activities is,

The variance is: ;

(3) There is not much difference in the professional knowledge and English proficiency of the candidates, but there is a big difference in participation in social practice and club activities, which will affect the students' final grades and their employment. Students should not only focus on learning their own cultural knowledge, but also pay attention to social practice and community activities, thereby promoting the improvement of students' comprehensive quality.