Exam 1 statistics
*****************

N              =  34
Average        =  65
Stand Deviation=  15
Median         =  64

Exam 2 statistics
*****************

N              =  33
Average        =  185
Stand Deviation=  54
Median         =  180


Exam 3 statistics
*****************

N              =  28
Average        =  73
Stand Deviation=  17
Median         =  75

Exam 4 statistics
*****************

N              = 27
Average        = 186
Stand Deviation=  62
Median         = 184


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