Exam results for Math 311, spring 2003

The first exam

  Part 1Part 2Total
#1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11
Max grade 4 4 4 4 4 14 12 14 12 13 13 86
Min grade 0 0 3 0 2 0 0 5 3 0 0 37
Mean grade 2.88 3.12 3.94 3.29 3.41 10.06 6.82 9.41 7.59 5.94 2.88 59.35
Median grade 3 4 4 4 4 13 10 10 8 5 2 59

Numerical grades will be retained for use in computing the final letter grades in the course. Here are approximate letter grade assignments for this exam:

Letter
equivalent
AB+BC+ CDF
Range[75,100][70,74][60,69] [55,59][50,54][45,49][0,44]

Discussion of the grading
Seventeen students took the exam. I tried to grade fairly. Of course I also tried to grade "anonymously", but that's difficult to do in a class this size where I've had extensive written work from most students. I repeatedly regraded and compared student work in an effort to insure that answers covering the same material with the same results got the same grade. I may have made errors and would welcome requests for explanation. Students should read my answers first, although certainly there are several correct ways to answer almost all of the questions.
The questions in part 1 were known and had rather formulaic responses so I graded them strictly. One complaint with some legitimacy would be in question 1, where I took a point off if the response included "upper bound" without an explanation of the phrase. My reason was that the definition of sup both in class (and the diary) and in the text explained what an upper bound was. In any case, I took 1 point off for this omission, which is not a large penalty.
Overall, I think the exam might have been too long and the total numbers show this. I adjusted the boundary lines for the letter grades in response. Please realize that the grades for the course will also be strongly influenced by other work, as I have previously explained. Students with predicted courses grade of D or F (based on exam grade and other work) will get warnings.


The second exam

  Part 1Part 2Total
#1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11
Max grade 4 4 4 4 4 14 12 12 12 14 14 99
Min grade 3 0 0 0 0 0 0 0 0 0 0 20
Mean grade 3.93 3.72 3.64 3.64 3.00 7.79 7.86 6.79 3.57 7.79 7.21 58.93
Median grade 4 4 4 4 4 8.5 11 8 1 7 8 61

Numerical grades will be retained for use in computing the final letter grades in the course. Here are approximate letter grade assignments for this exam:

Letter
equivalent
AB+BC+ CDF
Range[75,100][70,74][60,69] [55,59][50,54][45,49][0,44]

Discussion of the grading
Fourteen students took the exam. General comments about the grading duplicate what I wrote about the first exam. Again, I may have made errors and would welcome requests for explanation. Students should read my answers first, although certainly there are several correct ways to answer almost all of the questions.


The final exam

  Part 1Part 2Total
#1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11
Max grade 40 14 16 12 18 16 20 16 16 18 14 200
Min grade 34 0 0 0 0 0 0 0 0 0 0 39
Mean grade 38.57 4.21 7.57 5 7.86 10.29 12.64 6.71 9.14 9.29 3.71 115.5
Median grade 39 4 8 2.5 7 16 14 4 8 8.5 4 103.5

Numerical grades were used in computing the final letter grades in the course. Here are approximate letter grade assignments for this exam:

Letter
equivalent
AB+BC+ CDF
Range[150,200][140,149][120,139] [110,119][100,109][90,99][0,89]

Discussion of the grading
Fourteen students took the exam. I was most surprised by the results on problem #2, which is routine (taken directly from the text, I believe). I could have given that problem on the first exam, and perhaps gotten higher scores. Problem #4 was also from the text, and the results were not good and surprised me, because I thought it was again routine.

You probably know that Rutgers regulations declare that the Math Department must retain final exams, but students can certainly stop by and look at what they've done and how I graded it. If you'd really like, I could even make a copy of your exam for you.


Maintained by greenfie@math.rutgers.edu and last modified 5/14/2003.