COP-3530 STATS

FINAL EXAM:

   0 :  24 ************************
   5 :   0   
  10 :   0   
  15 :   0   
  20 :   0   
  25 :   1 * 
  30 :   1 * 
  35 :   1 * 
  40 :   1 * 
  45 :   3 *** 
  50 :   4 ****
  55 :   5 *****
  60 :   6 ******
  65 :   6 ******
  70 :   5 *****
  75 :   6 ******
  80 :   4 ****
  85 :   6 ******
  90 :   9 *********
  95 :   2 **
 100 :   0   


Mean =   50.35
Standard deviation =   35.04
Counted = 84
Non Numeric = 0 
Out of range = 0 


The average looks hideous, until you subtract
the 24 zeroes for the people who did not take it.
After the subtraction, the mean is 70.49.
The median is 70.
-----------------------------------------
COURSE TOTAL:

We dropped everyone's lowest homework, and added
0.7% to the total.  After that, three people were
lucky enough to be exactly 0.1% away from the next
grade threshold.  We pushed these people over.

        Plot of Total

   0 :   5 *****
  50 :   6 ******
 100 :   1 * 
 150 :   1 * 
 200 :   1 * 
 250 :   1 * 
 300 :   5 *****
 350 :   3 *** 
 400 :   2 **
 450 :   0   
 500 :   3 *** 
 550 :   4 ****
 600 :   4 ****
 650 :   6 ******
 700 :   3 *** 
 750 :  12 ************
 800 :   5 *****
 850 :  13 *************
 900 :   5 *****
 950 :   4 ****
1000 :   0   


Mean =  607.05
Standard deviation =  296.15
Counted = 84
Non Numeric = 0 
Out of range = 0 

Here, again, the mean looks bad, until you remove
the 24 people who didn't take the final.  After
subtracting the 24 lowest scores (which add up
to 3950), the new mean is 78.4.  So, the average student
who completed the course is in solid C+ territory, and
closer, in fact, to a B than to a C.  The median is 750.

Finally, the percentage of A's in my courses range
historically between 12% and 25%.
This time, 9 out 60 is 15%.

Happy Christmas and Merry New Year to all.

The Management.