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Exam 1 statistics 
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       (reported on  9/29 @ 12:44)
N              =    62 
Average        =   107
Stand Deviation=    31
Median         =   110
Min range      =   0-50
Max range      = 150-155
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Exam 2 statistics
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       (reported on   10/23 @ 9:15
N              =     61
Average        =    218
Stand Deviation=     72
Median         =    235
Min range      =   0-60
Max range      =323-333


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Exam 3 statistics
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       (reported on  12/21)
N              =    58
Average        =    168
Stand Deviation=    63
Median         =    152
Max range      = 280-333
Min range      =   0-50


OVERALL CLASS AVERAGE is 646pts (without the excess points), 662 (with excess points),
and would be around the boudary of a B/C+.

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 RULES 2-5.

RULE 2.
Students are then groupped 'curve like' per half of standard deviation (usually 70-90pts).
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 
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).