Here are the descriptive statistics for the grade distributions for the midterm exam and the course overall:

Course

Midterm

mean

85.63

76.15

standard deviation

8.06

11.86

25th percentile

81.02

70

50th percentile

87.25

76

75th percentile

90.75

85

minimum

67.08

46

maximum

104.25

103

range

37.17

57

 

The course grade reflects the weighted average of your problem set grade (inclusive of extra credits as described in http://bit.ly/2726KQ and in http://bit.ly/kdHlT) and your midterm exam grade.  As noted in the syllabus,  the final course grade is determined according to the following equation (see http://economics.garven.com/syllabus.htm):

 

Final Grade = .30(Problem Sets) + .30(Midterm Exam) + .40(Final Exam).

 

Since the grade database has grades for problem sets and the midterm exam, but not for the final exam (obviously), your current course grade is calculated as follows:

 

Current Grade = (.30(Problem Sets) + .30(Midterm Exam 1))/.6

= (1/2)(Problem Sets) + (1/2)(Midterm Exam).

 

Besides listing mean and standard deviation, each column in the table above also indicates quartiles (i.e., the 25th percentile, the 50th percentile (i.e., the “median”), and the 75th percentile) in addition to the minimum and maximum values for each variable.  The average grade on the midterm was 76; the average grade in the course overall currently stands at 85.63.

 

Next, let me translate these data into (hypothetical) letter grades for you.  Please understand that letter grades are not actually assigned until the end of the semester, after all problem sets and exams have been completed.  However, if I were to assess letter grades at this very moment, I would  curve the overall course grade as follows:

 

A

92

A-

86

B+

82

B

78

B-

74

C+

70

C

67

 

The application of this (hypothetical) curve would result in a (hypothetical) class GPA of 3.46, including 8 A’s, 13 A-‘s, 7 B+’s, 4 B’s, 2 B-‘s, 4 C+’s, and 1 C (note that A = 4 grade points, A- = 3.75 grade points, B+ = 3.5 grade points, B = 3 grade points, B- = 2.75 grade points, and C+ = 2.5 grade points).

 

By comparing your grades on Blackboard with the information I have provided here, this provides you with an objective framework for benchmarking your performance relative to your peers, as well as accurately gauging the letter grade that you have earned in the course to date.  However, we still have a fair amount of work to do, including 3 problem sets and a final exam, so I would expect that the final curve will likely change between now and then. 

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