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Exam 1 statistics 
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       (reported on  9/26 )
N              =    46
Average        =   103
Stand Deviation=    24
Median         =   107
Min range      =   0-50
Max range      =   135-140
=================================

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Exam 2 statistics
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       (reported on   10/29)
N              =   46
Average        =  260
Stand Deviation=   47
Median         =  268
Min range      =  0-166
Max range      =  320-333


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Exam 3 statistics
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       (reported on   12/19 preliminary)
N              =   46
Average        =  180
Stand Deviation=   63
Median         =  175
Max range      =  0-90
Min range      =  290-333

[ The class average with excess PrP points included and bonus points computed is 723 out of 1020.
Without excess points it is 700.]

RULE 1.
Final Exams at 25% of 333  = 83.25 receive an automatic F per 
Syllabus(Handout 1).
If letter grade is assigned here it is final; for all other cases 
it will involve RULE 2 and ADJUSTMENTS 1-3.

RULE 2.
Students are then groupped 'curve like' per half of standard deviation 
(usually 70pts).  Final Letter grades are decided for the remaining 
non-RULE 1 students.

ADJUSTMENT-1
RULE-2 students below 500 are added excess points to determine if they 
can be assigned a C.

ADJUSTMENT-2
RULE-2 students with (< 500 pts) but with  points at least  50% of top 
student points and an Exam 3 at MORE than 50% of top Exam3 grade  also get 
a C even if they have < 500 pts.

ADJUSTMENT-3
Students at more than 500 points use excess points provided Exam 3 grade 
is around the level of the Exam 3 grade of students in the upper group.

Definitions     Definitions
===========     ===========
Average         =  Sum of grades divided by number of exams
Stand Deviation =  Shows dispersion of grades. Roughly, 2/3 of the grades are
                   within 37 +/- 12 , and 95% within  37 +/-  2*12 if ave is 37 
                   and std 12
Median          =  Half of the students got that much or less (and half, more than that).