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Exam 1 statistics 
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       (reported on  9/27)
N              =    60
Average        =    64
Stand Deviation=    17
Median         =    64
Min range      =    0-30
Max range      =   95-100
=================================

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Exam 2 statistics
=================================
       (reported on  10/29) 
N              =   60
Average        =   181
Stand Deviation=    42
Median         =   180
Min range      =   0-60
Max range      =   240-250



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Exam 3 statistics
=================================
       (reported on  11/19)
N              =   58
Average        =   67
Stand Deviation=   20
Median         =   70
Min range      =    0-30
Max range      =   95-100

=================================
Exam 4 statistics
=================================
       (reported on   12/20)
N              =   59
Average        =   223
Stand Deviation=    73
Median         =   231
Min range      =   0-60
Max range      =   340 and higher. (Note the <= 25 bonus point possibility)

[ The class average including bonuses is 670; traditionally in curving
this is borderline to B and C+ but my group grading is more generous]

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 with (< 500 pts) but with  points at least  50% of top 
student's points and an Exam 3 at MORE than 50% of top Final Exam 
grade  also get a C even if they have < 500 pts.

ADJUSTMENT-2
Otherwise, RULE-2 students in range 400-500 are assigned a D grade and
0-399 students are assigned an F grade.

ADJUSTMENT-3
Students at more than 500 points are assigned letter grades accordingly per
RULE-2.

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).