Exam 1 statistics
*****************
                   (reported on Mar 9)
N              =   31        Maximum > 300
Average        =   209       Minimum 80-100
Stand Deviation=   55
Median         =   215

Exam 2 statistics
*****************
                   (reported on May 6)
N              =   29
Average        =   187
Stand Deviation=   56
Median         =   170 


Qz  1  statistics 
*****************
                  (reported on Feb 15) 
N              =  30
Average        =  69
Stand Deviation=  27
Median         =  60


Qz  2  statistics
*****************
                  (reported on Apr 11)
N              =  24
Average        =  72
Stand Deviation=  30
Median         =  70


Qz  3  statistics
*****************
                  (reported on Apr 18)
N              =  13
Average        =  52
Stand Deviation=  38
Median         =  45



Qz  4  statistics 
*****************
                  (reported on Apr 26)
N              =  24
Average        =  69
Stand Deviation=  26
Median         =  65


Definitions
===========
Average         =  Sum of grades divided by number of exams
Stand Deviation =  Shows dispersion of grades. Roughly, 2/3 of the grades are
                   within 76 +/- 23 , and 95% within  76 +/-  2*23
Median          =  Half of the students got that much or less (and half more than that).