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

N              =   28
Average        =   198 (64%)   Max = 286   
Stand Deviation=   61
Median         =   204

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

N              =   23
Average        =   157 (46%)   Max=  274
Stand Deviation=   69
Median         =   168


Qz  1  statistics          Comments about Qz 1
*****************          *******************
                           Problem 1      :  KiB means x1024, Kb means nothing
N              =  19       Problems 2 & 3 :  Practice more 
Average        =  76       Problem  4     :  ans is the MATLAB variable for holding results
Stand Deviation=  23                         a row vector has one row (and several columns)
Median         =  79


Qz  2  statistics
*****************

N              =  15
Average        =  53
Stand Deviation=  30
Median         =  60


Qz  3  statistics
*****************

N              = 14
Average        = 83
Stand Deviation= 34
Median         = 95



Qz  4  statistics [Qz 4 is make up]
*****************

N              = 11
Average        = 83
Stand Deviation= 33
Median         = 61


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).