NOTE: In reporting the averages from the test we drop
the lowest scores. This is because 20% (1 out
of 5) of all scores will eventually be dropped.
In comparing your average with the class average
you need to compare with an average which is
representative of the final average. Dropping
the lowest scores before reporting the average
is one way of estimating the effect of the final
drops. These posted test averages are not used
in any way in computing the final overall class
average. GBA
1st test
177 students took test 1
Multiple Choice
143 students earned 17 or more points
for those 143 the average was 59.7%
Problems
137 students earned 17 or more points
for those 141 the average was 66.1%
test 1 MC grades<>test 1 problem grades
2nd test
174 students took test 2
Multiple Choice
139 students earned 25 or more points
for those 139 the average was 69.0%
Problems
106 students earned 17 or more points
for those 106 the average was 57.8%
test 2 MC grades<>test 2 problem grades
3rd test
160 students took test 3
Multiple Choice
113 students earned 12 or more points
for those 113 the average was 45.0%
Problems
124 students earned 13 or more points
for those 124 the average was 58.0%
test 3 MC grades<>test 3 problem grades
4th test
154 students took test 4
Multiple Choice
122 students earned 12 or more points
for those 122 the average was 47.9%
Problems
121 students earned 17 or more points
for those 121 the average was 59.7%
test 4 MC grades<>test 4 problem grades
5th test
148 students took test 5 MC
142 students took test 5 Free Response
Multiple Choice
121 students earned 12 or more points
for those 121 the average was 49.4%
Problems
87 students earned 13 or more points
for those 87 the average was 50.9%
test 5 MC grades<>test 5 problem grades
Overall Pre-Exam Average
148 students have taken four or more MC parts and
four or more free-response parts, have a non-
zero quiz average, and have more than 675 HW
points. For these 148 students, the overall
averages are
% points
HW 89.6 7.16
RECITATION 80.0 5.60
(quiz+exercises)
CPS 84.7 4.24
test 54.5 32.69
_________________________________
overall 49.69 points out of 80 possible
pre-exam points
or 62.1% <-- Pre-Exam Average
Assuming an average of 60 on the final, or 12 out of
20 points, results in a predicted overall average of 61.7.
Since we now provide histograms throughout the semester
which you may use to determine your approximate standing
in the class, we no longer use the above data to attempt
to predict the final grade scale.
FINAL EXAM
For the 145 students who took the final and had also
taken 4 MC parts and 4 free-response parts, and had
also earned 675 or more HW points, the final exam
average is
20.46 out of 40, or 51.2%.
exam grades
An alternative calculation of the Final Exam averages.
FINAL AVERAGE
145 students took 4 or more MC parts, and 4 or more
free response parts, plus the final exam, and
had more than 675 HW points.
For those 145 here are the averages:
% points
HW 90.20 7.22
RECITATION 80.58 5.64
(quiz+exercises)
CPS 85.90 4.30
test 54.82 32.89
exam 51.14 10.23
_________________________________
overall 60.28 <-- final average
The final grade scale was primarily determined by the
large gaps in the grade distribution. Here is that final
grade scale.
41.1 - 52.2 D
52.3 - 64.3 C (above 61.2 is C+)
64.4 - 77.1 B (below 66.0 is B-, above 74.4 is B+)
above 77.1 A (below 79 is A-, above 87.9 is A+)
Letter grades were assigned strictly according to this
scale. The highest E is 39.0, the lowest D is 41.1; the
highest D is 51.0, the lowest C is 52.3; the highest C
is 63.3, the lowest B is 64.4; the highest B is 75.8,
and the lowest A is 77.2. The smallest gap between
levels is 1.1 points between C to B.
If you find a significant error in your recorded grades,
the best time to see me is before NOON FRI Dec 19th. After
that time any change will require that we fill out a
change-of-grade form. For information on how to figure your
final grade see
HOW TO FIGURE YOUR FINAL GRADE.
Here is the final grade distribution for the 145 students
who took four or more MC and free-response test parts plus
the final exam.
You may also view this column of grades as a text file.
131 grade distribution
You may also like to look at the Fall 2007 Class Averages.