Here are the statistics and letter grades of the final grade of the course (the weighted averarges of midterms, final and quizzes) 

 

Mean 66.144 

Median 68.33 

Standard deviation:  17.33 

Grade 

weighted average 

% of the class 

A 

87 to 100 

9 

A- 

82 to 87 

8 

B+ 

78 to 82 

11 

B 

74 to 78 

11 

B- 

69 to 74 

11 

C+ 

66 to 69 

9 

C 

56 to 66 

23 

D 

30 to 56 

12 

F 

30 

5 

Plot 

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