overall pre-exam grades for 252 
                                         total
            prs    lab    hw     test    points   percent
                                      (out of 85)
1671-473   44.17  87.20  38.67  55.25    51.03    60.04
1162-181   91.67  85.40 100.00  60.50    62.08    73.04
6918-011  100.00  94.30 100.00  72.50    70.11    82.48
7582-789  100.00  93.80 100.00  50.25    58.89    69.28
6662-280  100.00  95.10 100.00  86.75    77.39    91.05
6835-134   85.83  92.70 100.00  83.00    74.62    87.78
0017-324  100.00  92.70 100.00  74.75    70.92    83.43
0673-923  100.00  88.40  97.33  75.25    69.98    82.34
6638-252  100.00  94.90 100.00  76.50    72.23    84.98
4003-112   75.83  90.70  75.17  39.25    49.06    57.72
7738-021   76.67  90.40  83.50  40.00    50.40    59.29
1768-900  100.00  88.40  94.00  38.75    51.34    60.39
3925-092  100.00  93.00  85.25  71.75    67.71    79.65
3145-477   65.00  91.60 100.00  80.50    72.52    85.32
7755-652  100.00  88.90  69.58  54.00    56.13    66.04
4115-015  100.00  86.00  95.67  77.25    70.31    82.71
9353-141  100.00  88.40 100.00  73.50    69.43    81.68
8470-059  100.00  91.20 100.00  64.25    65.37    76.90
0259-348   91.67  93.60  40.92  77.50    65.13    76.62
3142-520  100.00  91.70  92.42  51.50    58.18    68.45
9699-184   37.50  85.10  77.42  35.75    45.31    53.31
1657-349  100.00  92.10 100.00  80.00    73.42    86.38
5900-048   69.17  90.90  97.33  45.50    54.69    64.34
2879-891   95.83  92.40 100.00  44.00    55.36    65.12
3097-799  100.00  92.90  92.58  53.00    59.19    69.64
3597-306   85.83  90.40  88.17  54.50    58.48    68.81

The test average was computed with 1 test dropped.
The lab average was computed with 1 lab dropped;
I suspect the lab grades may have an error or two
in them (I have asked Candi to double check), thus 
please consider these lab averages to be preliminary.  
Lab averages now double-checked -- one error found
and corrected (5/10 3:00 PM).

The pre-exam class average is 62.6 points (73.7 %).  
Assuming a final exam average of 65 (9.75 out of 15)
a predicted final class average is 72.4.  With this
average, an approximate grade scale would be

           57.3 - 67.3    D
           67.4 - 77.3    C
           77.4 - 87.3    B

As stated in the syllabus, less than 33% on HW
is an automatic E (i.e. less than 600 HW points
for the entire year).  The final grade scale will
of course depend on overall class performance on
the final exam.  Also, the final grade scale will
be selected so as to find gaps in the final grade
distribution.  GBA