I just realized that the last time I uploaded your grades onto Blackboard, I inadvertently quintuple counted the sample final exam extra credit assignment, which gave those of you who turned in sample final exams artificially inflated (and grossly incorrect) problem set grades.  This error has now been corrected and is reflected on Blackboard.

Just to be clear, I assigned a total of 7 rquired problem sets and 1 required survey that were averaged to produce a problem set grade (these are listed as items 1–8 on the http://economics.garven.com/problem_sets webpage).  I also assigned 4 extra credit opportunities worth a maximum of 20 points each which get added to your lowest required problem set score.  The last 2 extra credit assignments included the sample final exam and the chapters 14–15 problem set; the details on these assignments are provided at http://bit.ly/6oCtOt.  The first extra credit assignment is described at http://bit.ly/4GTVbr, and the second extra credit assignment is described at http://bit.ly/5gkiBc.

Anyway, I gave 100’s to all students turning surveys in, and obviously the grades on problem set 1–7 varied depending upon your performance.  Consider the hypothetical example given in the table below.  This “student” earned a 100 on the survey and got 80’s on problem sets 1–7.  She also turned in all four extra credit assignments so she earned the maximum possible extra credits. 

Student Survey

100

Problem set 1

80

Problem set 2

80

Problem set 3

80

Problem set 4

80

Problem set 5

80

Problem set 6

80

Problem set 7

80

Extra Credit 1

20

Extra Credit 2

20

Extra Credit 3

20

Sample final exam (exam grade x .2)

20

Her problem set average is computing by totaling the points earned on the student survey and the 7 problem sets, and then also adding the extra credit points.  Since there were 8 required assignments, this sum is divided by 8 in order to determine the problem set grade.  In this hypothetical case, the average problem set grade is 92.5.

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